UPDATE: Wo0ow! I just called one of my local Shacks, and I asked the guy what accesories will they carry at launch? He said Chargers, Screens Protectors (all generic), and headphones (the Hero kind, Im not sure if the EVO can take those). He said cases will come out after launch.
Looks like I'll be using my Best Buy Mastercard for some points
EDIT: Just verified that they dont carry any HD2 gear either, tho YMMV in your neck of the woods. Ciao!