Yes, I saw him with Wheeler in the ‘Angel Song’ tour and pretty sure I saw him as a guest with one of Kenny’s Birthday Big Bands, possibly his 75th. That may have been the occasion with Abercrombie. From my vaguish recollection, Kenny used himself, Norma Winstone and Konitz as lead voices.
First time I saw him was at a long-gone Toronto Club with local rhythm section. Didn’t even know he was on until I passed their entrance with makeshift sign ‘Tonite - Lee Konitz’. I was in like a flash.
Lou Gare - saw quite a number of times with Mike Westbrook.