Dwarves aren't cool anymore

[Psyren]

In my opinion, that doesn't make them "part Ankheg" any more than hearing makes us part bat

I think constant echolocation as opposed to merely "hearing" would make us/them feel "part-bat."

Anyway, if they change it to be constant tremorsense I wouldn't set my books on fire or anything, I just think the playtest version with it being an activated ability is plenty sufficient.