I echo Glenn Reynolds in hoping that enough conservative Republicans get on board with this so that it passes. As for the Senate, I think Lileks had it right on the Hugh Hewitt show yesterday:
At this point, I'm on board with a unicameral legislature. I'm frankly okay with just bricking up the door to the Senate entirely, and letting the lower house figure things out.
Word to the Republican Senate Campaign Committee: Not one dime, yo.