Squirrel
I think limits will depend on machine,company,instructor and student level. I think Robinson limits to less than 25knots unless pilot on controls has more than 200TT. I can understand the logic of experiencing at point I can no longer control helicopter but when training I had to trust my instructors judgement of my experience (or lack of). I have been brought on quite windy day but didn't learn much, can't be sure how much was me and how much was instructor and how much was wind. Upside was, instructor had another hour in his logbook,i was a few pounds lighter in wallet and learnt not to waste time again.
I would have respect for instructor who didn't want to waste my money in furnishing his logbook with another entry. This is based on my early training experiences, I did benifit from similar flying post PPL but if only to show me it's nice to get back on the ground
In short, I don't know, Too many variables and ultimately it's down to a question of wheather you trust your instructors judgement or not, if not then fly with someone else or take up cricket