Playing Bass Trombone and Euph - Is It Bad for Your Chops?

[Richard III]

No. It will make you a better player. Toot around on a tuba and you will have the unholy trinity!

This. I play trumpet, euphonium and tuba. The tuba addition has made everything better. Who knew? I hadn't played trumpet in two years. I was shocked that I could pick it up and play with no problem.