Scott,
I don't see any reason why how we urinate should stop you from skiing or me from farm chores. Toilet, bag, bucket, bush or tree, it's all the same.
I'm up to 26 BCG now - supposedly past the point to give up on it, but the CIS comes and goes but, so far, is not making a run for the muscle layer. I decided that I would not miss the bladder when it is gone, but willing to keep it up until the first sign of moving toward invasive.
In my misspent youth I did all the things we are not supposed to do - no regrets, enjoyed everything at the time. Reformed years before the BC was found. Of course, it was only later that "everything enjoyable" was found to cause cancer. So we move on.
I hope all goes well with your bladder R&R. Don't be a stranger to the slopes. Keep us posted.
Best
Jack