This day and age unfortunately anything outside the syllabus of your training organisation and your exposing yourself.
If your syllabus gives you the option and its been approved by the powers that be then there is no problem.
If the syllabus tells you its only incipient you should take it too then that's what you have to do.
Outside a formal course structure fill your boots.
My FIC had all the stalls in it until stall as exercises that I had to take control and recover from the RHS while the FII put the aircraft into them. But it was not a pattering exercise it was pure recovery handling and I wasn't expected to teach them to a PPL. And it was documented in the FIC syllabus.