Absolutely: I upgraded from a 15" TiBook to a 17" AluBook and was pleasantly surprised I was asked whether I wanted to import settings from an existing Mac. I thought it was only available with the new G5.
I had sent Apple at the time feedback on how great it would be to have it as part of OS X installation. I guess they must have received tons of similar feedbacks.
Worked perfectly and I had the 17" ready in a very very short time. I have seen it on recent PB 15"s: was there on a new one arrived at a colleague's desk who switched from Windows but not on two other 15" PBs of colleagues who switched from Windows a couple months ago.
BTW, is it me or switchers now abounds: it is as with cherries, one brings another along the line. More and more I am contacted to help people choosing a configuration - I am the Mac guru here - and it is always "I have seen such-and-such with a Powerbook as well. If s/he moved then I have no reasons to fear and not switching myself.".