Schmidt Courtois 420 OB? Anyone ?

[SamO]

Any advice on this horn as a doubler for bass trombone in a big band ? I got the idea on trombone chat when one trombonist said
that you could use like a conn 88h size horn to double. I am a lifelong tenor player trying one year so far to learn the bass axe parts. My mouthpiece which I got from Doug Elliott has gotten bigger and the horns are downsizing. I started with a Conn 62, now use a Conn 71. My primary horn was a conn 79 h .