Chastity and orgasm denial discussion

Hi, For quite some time now I have been interested in this subject. i did a bit of research on the above topic and most of what I found was about conditioning females, with not much significant info regarding males. i like the concept of training male orgasms so that regardless of stimulation he receives, he stays dry. He will only cum when given permission, and combining it with chastity could be quite interesting to observe. If a man can learn to cum on command then i don’t see why you would need lock your partner in a chastity device because even if he gets very horny he won’t be able to release. So, i was wondering what other people think about this idea and if anyone has tried it, as well as the methods for conditioning a man to cum on command?