I've seen him a few times. First time was in '97, on (i think) his original tour with the Splinter Group, with Cozy Powell on drums.
Greeny looked like he wasn't really up to touring at the time, but the second time I saw him a few years later, supporting John Mayall, he was pretty good, and looked to be a lot better in himself too.
Good to know he's still out there playing, and doing it to a good standard.