The general argument for dropping OwE when it comes to gear is that it allows you to get better rolls (more dps rolls?) in place of the double stacked resists. This argument is 100% incorrect.
Lets take a look and see whether this is really true or not. Heres the amount of random affixes BiS items typically have:
Head - mempo = 1, radiance = 2
Shoulder - BOA = 5, VW = 2
Amulet - BOA = 5, Rare = 6
Chest - BOA = 5, Inna's = 1, Tal's = 2, BT's = 2
Gloves - BOA = 5, Rare = 6, T&T = 2
Bracers - BOA = 5, Lacuni's = 3
Belt - WH = 3, Inna's = 1, Rare = 6
Pants - Inna's = 1, BT's = 2, Rare = 6
Ring - Nat's = 3, Litany = 1, HF = 4, SOJ = 0, Unity = 1, Rare = 6
Boots - Nat's = 1, Zuni's = 2, IC's = 3
I'm sure most people would consider BOA stuff BiS, and beyond that WH, Temperance, Reflection, and Bloody Footprings too.
That leaves head and your 2nd ring up for debate only. And maybe chest still too.
Lets take a look at the items we're talking about though:
Mempo vs. Radiance = 1 vs. 2 affixes
BOA Shoulders= 5 affixes
BOA Amulet = 5 affixes
BOA vs. Inna's vs. Tal's = 5 vs. 1 vs. 2 affixes
BOA Gloves = 5 affixes
BOA Bracers = 5 affixes
WH = 3 affixes
Temperance = 1 affix
Reflection = 3 affixes
Litany vs. Rare vs. HF vs. Unity = 1 vs. 6 vs. 4 vs. 1 affixes
Footprints = 1 affix
Now we can examine each slot closer...
Mempo comes with dex+ias+life%+ar+os meaning the ONLY stat worth choosing here is CC. So double stacking is out. Radiance comes with Dex, Vit, CC, and OS. Meaning the last two affixes become choices from Vit, Life%, AR, a 2nd resist, and less desired stacks like SR, LPSS, and FoT/SW dmg. At the highest of gear levels AR + Life% is arguably the best possible combination of rolls. But given the other choices, 60 AR is less valuable than Vit or Life%.
We'll use rolling Dex shoulders as an example. We would ideally then want vit, dex+vit, ar, life%. That DOES leave one affix open for double resist, although an argument for stats like PUR or Chance to Chill on Hit too.
On Dex amulets you want IAS, CC, and CD. After that theres two rolls to divvy up between AD, Vit, Life%, AR, and double res. Again I would argue ideally one would NOT contain a 2nd resist.
For chests, its fairly straightforward too. Inna's and Tal's both benefit far more from rolling Vit compared to AR. Tal's potentially has the option of both though, if you sacrifice Dex. BOA Dex chests are the only one remotely worth considering for double resists. For them you would want these rolls - vit, dex+vit, 3os, life%, and either elite DR, lps, a second resist, or AR. Since the most dangerous enemies in the game ARE elites, I'd argue that 7% eDR is more valuable than 60 ar. But I suppose thats mildly debatable. We also know that 80 > 60 so if you want two resist rolls that means giving up one of Vit/Dex+Vit/3os/Life%. Hardly worth it.
For gloves, we want/need IAS+CC+CD. The last two rolls desired would be Vit and AR. So no room for double stacking.
With bracers, we reach one of the best slots to actually double stack. Here you only need Vit, Dex+Vit, AR, and CC. Actually, this becomes the same situation shoulders put us in. Choosing between 60 AR, PUR, and Ranged/Melee DR instead of on hit Chill. Whether you want/need any PUR is up to you, but so far shoulder or bracer are the only slots worth considering a 2nd resist roll in.
Witching Hour has 3 rolls. It comes with Int, CD, and IAS. That leaves us with Dex or Dex+/Vit, AR, and Life% ideally. You'll mostly likely spend an arm and leg to get one though. Alternatively, you can get a far cheaper one with just a 2ndary resist. But you still won't want to sacrifice an affix for double stacking. Vit and life% are more valuable than 60 AR generally.
Inna's pants have one roll. You either want dex/vit or vit here. The ONLY way AR Temperances are competitive EHP wise with Vit rolled ones, is if you use amethysts instead of emeralds in the sockets. But then you lose EHP and DPS from losing Dex. So its never worth it getting AR here. And the possibility with 1 affix to use double resist is nonexistent.
Reflection rings come with Dex, IAS, LPS, and 3 affixes. The most valuable obviously is CC. DPS wise you could spend all 3 on AD, CD, and CC. But it's probably better overall to drop either AD or CD for AR. Obviously with such a large amount of dps potentially coming from one slot, stacking 2 resists here is not worth what you'd be losing.
For the other ring slot, Litany and Unity are out since they both only have 1 affix. That leaves HF and rare rings. The former has 4 while the latter has 6. Ideal ring stats are AD, AR, IAS, CD, CC. Obviously HF have to choose 4 of these, while rares can roll all 5 + a secondary resist. But to do so, you either have to sacrifice a dps roll already listed, or being will to not have Dex on it. A loss either way.
For boots, Bloody Footprints only have 1 roll. You COULD double stack here. And this would probably be the most likely place to suggest it, because the best roll for this item clearly is Dex+Vit which run you over 2B easily if you're looking at 270+ 80+ pairs.
So that leaves us with 3 potential slots out of 11, that could be used to double stack resists without sacrificing MORE EHP, or dps. That means OWE AT MOST is worth 180 AR.Perhaps the conversation shouldn't be about whether OWE is worth it or not, but whether it's more worth using than STI. Because most monks have less than 3.6k Dexterity.