So true.. of the times that I've tried to save a buck I would have happily paid $50 at the end to freely pee. So now I spend the buck.You'll find the vast majority of people that can use a cath will use a cath on every drysuit dive. Assuming it's a Trigon valve, they are pressure compensated and you will not need to do anything for those times that you do not hook up.
Also watching others in a ds race to get it off is priceless... I'll gladly pay the $1 to watch that show too