Woo woo. I'm currently using a fist primary and a mace in offhand. You get the skill damage bonus for having fist primary and still get some weapon stats (and better damage) in the offhand. Not quite as good as 2handed boomstick but viable.
Actually, if I can convince you, I'd rather see the fist delay reduced rather than more damage. It would mean more spirit generation and makes sense, why would fists have 30 delay when endgame weapons are low 20s?