Ah, you never know. There are quite a lot of bulky leads around who won't want to get Tricked Specs. Swampert, Hippowdon, Roserade, Gliscor and Uxie all hate being Tricked Specs (Roserade maybe not, but it limits its usefulness). People might get the drift I'm using a Choiced Latias, so they might go for the early Stealth Rock and get Tricked some Specs, so if I'm feeling ballsy, I can catch suicide Azelfs, DS Azelfs by surprise with Trick, and if I'm really in the mood, I might even Trick Metagross (MM won't OHKO), Aero if they go for the quick SR and if I really feel like an idiot, I might even Trick Tyranitar thinking I'll switch and set up SR. Trick can come in very handy.