I find them quite comfortable! One place to find them would be CSTC Mont. St-Sacrement, Quebec. That is the RCSM(E) (Regional Cadet School of Music (Eastern)) I was issued them when I went there for the AMBC (Advanced Military Band Course). Great course, and a lot of fun, by the way. If you think you are up for a challenge, and this would be a challenge even to a level 5 qualified cadet, then do this course. It's something you will never forget.
Back to main topic, ask about them when you go to your CSTC. They might not be standard issue, but there might be some kicking around, waiting to be found/asked for. You never know...