Honestly I think that the Choice Scarf set should just be all physical with HP Ice in the AC. While being able to to OHKO Dragonite (who can likely Extremespeed you), Salamence, and Landorus is nice, there is are a few beefs I have with running it. 1. Close Combat is hilariously weak as well as U-turn. Seriously 253 attack stat just does not cut it with Close Combat being the cleaning move of choice. To put into perspective how weak it is; 252 atk Naive Scarf Keldeo to revenge kill with only 10 less atk and 4 less SpA, but with a better STAB in Water that can be boosted by omnipresent rain and and has a wider variety of targets to revenge. U-turn is one of Scarf Infernape's best (and almost only) niche against Scarf Terrakion. If you ran Scarf Terrakion you wouldn't have to chose between mence/nite vs volcarona/Gyarados. Terrakion would be a stronger cleaner and revenger (stab SE+attack stat), so you want Infernape's U-turn, which you will be clicking a lot, to hit hard as possible. Seriously 36 Atk EV's almost all the time does less than 50% to Latios with U-turn to put into perspective how weak it is. 2. Flare Blitz is an arguably much better revenging move and cleaning move on Scarf Infernape than Fire Blast. For one, it does not miss. I don't know about you but when I want to revenge something I do not want to mess around with getting haxed out by losing a game to a miss. Secondly, its 20 base power stronger than Fire Blast, so all around it will hit harder than Fire Blast can. This isn't accounting for the EV's you gain with the all out attack investment vs 220 SpA. 3. You can still hit Dragonite and Salamence pretty damn hard with Stone Edge, so it is not entirely outside the realm of revenging them without HP Ice.