The difference is that a 6" bell on a Calicchio or Martin looks twice as big compared to a Monette. I first thought he was playing with a trombone bell !
It first looked like a mellophone to me but later I saw that it was a trumpet with a 6" bell. It's always hard to see what the brass is playing because they are not in the front. You always see a few shots of them on tv.
Another question is what Greg Gisbert is playing. I saw him also on the Northsea Jazz Festival with the Jaco Pastorius Band and he sounded pretty awesome to ! It looked like a Calicchio but I'm not sure.
P.S. Richard Bona was playing bass, ouch....