I am certainly NOT in the same league of performance as you Dave as well as most on this forum, but at this point, I am using my Shires Q40 more than...
The answer to your first question is yes, mostly. The length of the horn and the fingerings are like a 3-valve F tuba (that is non-compensating), but...
It is a common problem for all baritones: the diameter of the smaller bore, compared to the euphonium, exacerbates the accumulation of condensation,...