For the Jewelcrafter only gems there is no PvP power or PvP resilience gems which is a poor decision in the eyes of many players. Without PvP power/PvP resilience Jewelcrafter only gems many players will be forced to drop their Jewelcrafting profession for a better one[such as blacksmithing] if they want to have optimal stats for PvP. Will we see a change to this soon? I hope so.
I think it would be better to give all professions the ability to get stats for pvp power/resil rather than just BS
also, in order to use jc-only gems you must take up a slot of a potential pvp power gem[non-jc specific ones], therefore having less pvp power than someone with say Alchemy while having the same intellect/etc.