I've had a Hot Springs salt system for over a year now. My routine is to balance the alkalinity and ph as needed, and put 2-3 tbls of chlorine enhanced shock in the tub once every 5-7 days depending on use.
They aren't as foolproof as advertised, but I never have to add chemical after use, and there is no chlorine smell.
Ph will increase with aeration, so I find myself adding ph down about the same time I put the shock in each week.
Overall it is nice to not have to add anything after each use, especially in the cold climate I reside in. Hop out, shut the cover, and go indoors until next time.