So, mechanically, Punch it the exact same thing as Clout, only you have to be right on top of the guy?
In turn you have an added -3 Drain ?
Meanwhile, for the same drain you would get +3 DV & -3 AP v/s Shooting them from Range?
Seems like a fair trade off, getting in close could cost you some pain & turns you could have been doing other things.
Actually, it makes Clout the weakest of the 3 now.
A combo of Blast & Punch would be nasty, provided you don't mind burning 2 spell slots.