The only mon I would seriously use Powerup punch on is Mega Kangaskhan. Parental bond + Powerup Punch = taunt proof swords danceGod dammit, I was looking forward to testing it out as a wall some time, now I will look stupid doing that.
Anyway, any thoughts on Power-Up Punch? I know it is a pretty weak move (40 base power) but increasing attack with every hit is nothing to pass over. I can see it being used on something like Terrakion for example, who has a little wiggle room in its moveset, and can use it on weakened Pokemon to kill them off + boost attack.