Reversal Energy fits this thing like a glove, and its ability to hit 210 damage out of nowhere with a Defiance Band shouldn't be overlooked. Its biggest problems are that it doesn't hit hard enough (180 and 210 both just barely miss out on important KOs) and that 210 is its absolute limit without some nonsense like Kingambit SV1 getting involved. Right now, Grass is almost irrelevant as an attacking type as hardly anything important is weak to Grass, so that provides even less incentive to use Pinsir.
In a toolbox sort of deck, Zamazenta CRZ can hit for 220 without Tool assistance, which is a much better deal considering it effectively has the same activation cost, plus a useful Ability over a worthless first attack.