Yes, you're right.
hbbfam — that 1967 Vanguard material is really good. It was originally a 2-LP set, but it fits on a single compact disc. (Maybe you have it?) I have the Japanese SMH-CD edition, and the sound is unusually good for live material. I think it was Eddie Gomez's first appearance as part of the trio, and Philly was (somewhat) guesting. Regardless, his ears were fully attuned to what Evans was playing!
Now that I think about it, while Evans is certainly a piano trio icon, I sometimes think he was more comfortable in a(n implied) duo setting. He did record with Gomez (minus Morell) in a duo setting, and the 1967 Vanguard material (while Gomez is of course playing as part of the trio) almost feels like duo work with Philly Joe Jones. When I listen to that disc, I hear Evans and Philly "talking" to each other, while Gomez is filling spaces in between. But that's just the way I'm hearing it these days — not a demonstrative observation. I've really come to love late-period Evans, which, many years ago, I shrugged off as simply more of the same. It's not.
(Oh — and I wouldn't classify 1967 as "late-period." I'm actually thinking of the trio with Johnson and LaBarbera. I love that trio, but still can't say I "know" their work.)