OK- Getting further and further from the original post...
According to the book "Crosby, Stills, & Nash" by Dave Zimmer, David Crosby, and Henry Diltz, Greg came to the band via Ricky James (a/ka/ Rick James) who was in Neil's aborted Motown escapade "The Mynah Birds". Anyway, Reeves did indeed play on "Cloud Nine" by the Temps. And Stills passed over Kenny Passareilli because he was too young... Anyway, after Deja Vu was recorded, and CSNY is preparing for the 1970 tour, Reeves got fired. The book says "We had to do it", says Crosby, "because Greg suddenly decided he was an Apache witch doctor. He just flipped right out, man, and none of us wanted to argue the point with him"
It goes on to say "Nash adds, 'Greg also wanted to sing some of his songs on the CSN&Y show, which I thought was ludicrous,only because the songs weren't great. We'll sing any song if it's great, but not jsut because it happens to be written by our bass player. So we had to let Greg go."
Anyway, that's the stuff I was hoping to find in the Henry Diltz link. I'm still not going to presume that Greg didn't play on any of Deja Vu, given that he's reportedly on a real Motown hit, and he's credited on Young's "After The Gold Rush" too.
BTW, I don't think that P/flats is a bad sound at all- my VS '62 P has had the same set of Lakland Joe Osborn flats on it for at least five years. I meant that the bass sound on Deja Vu is pretty generic due to the mix, the songs, etc. And there's not really a definitive Stephen Stills sound that's distinct enough to distinguish it from Greg Reeve's sound. Especially given Rick Rosa's comments that he used a different amp for his CSN(Y) gigs because Stills didn't like the sound of his regular rig.
The comments from Crosby and Nash would also indicate why Reeves seems to disappear off the map after CSNY (all of 'em, not just Stills according to the quotes above) fired him.
jte