. . . to throw in my humble opinion: i wouldn't wanna bet my car (sorry, slipkid, couldn't resist that one
), but i'm sure it's NOT peter on lead - the solo is way too "snowy white"!
don't forget: we're talking 1979! i loved "in the skies" and i still do, very much. but on a listen to the lead guitar style pg displayed on the "skies" album, it's plain to hear that by this time peter didn't have such a flowing in his playing any more. i always admired snowy for the fact that his playing showed such a strong greeny influence - there's nobody i know out there, who is capable of that like snowy white. and for my money the best solos on this album are by snowy.
too bad, i wasn't aware that this version exists when i met snowy last time 'round - i would've asked him about it. maybe someone else can try to make contact to him these days . . .