Weird, it takes me 20 seconds to launch Fallout: New Vegas on Steam for me. About 15 seconds to launch Steam and 5 seconds to find FO:NV in my library and start it.
I mean when I'm not logged into Steam - It always starts some weird update procedure, without updating anything at all. (reinstalling doesn't help either) We all have different experiences though, so I guess we'll never be able to all agree what is best of Steam and GFWL - All we can agree on, is that none of them are ultimately the best for the users.
I don't have anything against either of them though, but it would be a nice change nowadays to get a DRM that interferes less. (CD-Key anyone? - It doesn't make for more piracy, as we already see cracks made on day one for games that require Steam or GFWL, so CD-Keys is, imo, still the best option!)
BUT, we can rest assure that it will NOT require GFWL, as Todd have already stated it will not...