Looks like if you want it you will have to go Dex based.

Any chance of at least having a feat that permits light or med armor Ki regen somewhere in the Kensai tree? Or allow only heavy armor and get rid of the evasion advantage also as a way of making people chose.

If as a fighter your limited completely to no armor and monk weapons there is zero reason to not be a monk 100% and forget the rest.

I realize that is probably as intended but still...consider it. =)