Miax,
don't you want to
play NV first??

or are you a modder at your core, through and through? :user:
GECK first, game second...
I played Fallout 3 for hundreds of hours, maybe 200 total. I have spent at Least 2,000 hours in the GECK and modding, building a huge airport DLC that I plan to convert to New Vegas format and continue working on. So for me, the game building aspect is as important (if not much moreso) than the game itself. Insanity runs deep in my veins.
I can see no reason why the BSA format would be any different, I will make my last GECKulation here before release; FOMM (the Fallout Mod Manager) in it's current form for Fallout3 will open and work with New Vegas without modification - we'll see if I get this one right or not soon.