Mark,
As far as Chuck is concerned, Gregg is definately involved and contributing as much as anyone else with the album. Personally speaking, whether he'll tour with them (should it ever come to that) is another matter. The guy is a millionaire now. He certainly doesn't need the hassle. Obviously. I'd like to see 'His Royal Greggness' on stage again just like you. Remember the Scorpions tour?! Woah!