Yes, I didn't make the trip to Paris to hear Bud, as did some of my friends. Someone who told me he'd heard Bud in Paris was none other than Joe Harriott! (He also said he'd never heard Bird live. "Just the records, man".)
Yes, those who saw them are now a shrinking bunch. Can't claim to have seen Bird, Bud or Fats, but did see Diz, Monk, Max, Klook, Dex, Stitt, Haig, Albany, Bishop and McKibbon.
Trying to recall the 10" LP I listened to in c.1958. The tune title "A Wetback on the Left Bank" sticks in my mind. As I recall, this unkind remark relates to drummer Chuck Flores.