Does the glyph you chose of Fetish Army really change their whole damage they do as elemental?
Most guides state, yes it does. But my tests dont give 100% curtain results on this. It more seems that the base fetishes it summons always stay physical, and for example just the additional ones are either fire, or poison.
But important: The tool-tip doesnt change at all if you for example use the fire glyph. It still says, your fetishes do ... as physical AND it summons two additional fetishes as fire. The same goes on the poison glyph, the tool-tip for the base fetishes stays physical, regardless what glyph you use.
This is different from other spells, where the tool-tip also changes with the glyph elemental source.