There was never a PowerMac G5 released during the whole G5 Macintosh era: PowerBooks were G4 during the whole G5 era. This was because of its tendency to run hot and hence eat batteries.
Apple foresaw the whole movement to portability and PPC chips were not an option.
Their license of the technology underlying Rosetta allowed them to accomplish this move with transparency and ease of use. It was a minor miracle...
I was an owner and user of VirtualPC, the Windows emulation software for the Mac, it was slow and cumbersome. I only used it when I had a "must use" Windows application.
As a matter of fact the licensed copy of Microsoft Windows XP contained in my last version of VirtualPC from Connectix is still the licensed version I use for Windows XP in Bootcamp/Parallels -- and I am so glad to run it on an Intel instead of emulation!