I've never actually played a Tremoverb, but I'm a Rectoverb owner and absolutely love the thing. Evidently they're voiced quite a bit different, and the Tremoverb is more midrangey. They had quite a following with the studio musician/on tour with popstar set I guess, too, for pretty much that same reason.
That said, even a Rectoverb is almost stupidly flexible, so I can't imagine how that thing could NOT sound good.
nice score... i'm not a guitarist myself but over the years have played with quite a few guys that have the smaller boogies 22calibers and such... way cool little amps...