I don't mean to be pessimistic, but I can't really see that this is going to work...
And I'm not taking this press release too seriously. The quotes don't sound like Peter at all, I mean: "The best live band since Fleetwood Mac" - come on!
Some guitar work on a few tracks, and perhaps even a couple of gigs, yeah. But for him to join as a regular member recording and touring.... Nope.
I listened to a clip of the single "Cold Shivers" on youtube. It could be Peter playing those tones at the beginning...
Anyway, they're nothing more than average. Having Peter on board would of course give them an advantage.