Was mention but never confirmed, they weren't comfortable with monk looking like they are hitting things with their barefist, there was mention of having some runes appear on your fist but none of it is actually confirmed though.

I am not sure about the lore for FF monk, but are other previous FF games monk using the same type of weapon we do because as of now we seems to be stuck with bladed/claw and in HW spike type of weapon. Why can't we actually get a gauntlet type weapon, I have seen quite a few games with pretty awesome gauntlet type weapon, hell I even thought Alex weapon would be gauntlet type since it's steam punk and all, would have been a good fit.