Yep, on Vinnie's last solo tour between UFO tours he had Mike DiMeo on keyboards for his solo instrumental songs and was interspersing them with classic metal covers with Mike on vocals.
There was a London date... I couldn't be bothered to attend, I must admit.
27/4 Dan Patlansky
3/5 Maiden United
7/5 One Machine
8/5 Blaze Bayley