You're right that Bush would likely sign it if it came to him - he's yet to veto ANYTHING. I do, however, think that it is buried VERY deep right now, and only 5 legislative days isn't enough time to get it passed in the Senate, taken to conference committee - with the House Conferees agreeing - then back to the Senate and the House for floor votes. I just don't think that it'll happen.
However, that is no excuse for any of us to slack off in our phone calls or letter writing - we can't reduce the pressure!
I won't put it past them. Not until the day after the AWB sunset. Even after, Eternal Vigilance and all that.