Anyone on here cut a feature in FCP X?

Anyone? I'm about to start a feature project. In the past, I've used FCP for feature length cuts, with Avid, Edius & Premiere for short form.

I was just wondering if it can handle native Red & Arri files, multiple rushes formats on one sequence, going from offline to online, coforming, exporting for sound & grading, having masses of rushes, nested sequnces, share multiple sequences with other editors, and the state feature projects can get into

I'm curently looking at trying out Avid 5 or CS5.5 (maybe 6) for this, but was thinking it could be interesting using & learning FCP X. I'll be cutting at a facilty, hardware won't be an issue.

Cheers!