The 'regime' starts from day one of the training course. I have no idea personally what it is like on Mixed fleet only what I have heard and that is that they are constantly being told that they are 'the elite' and that it is very strict.
All I can say is that these clauses are in the contract and some crew have left.
I am sure that there are many that are very happy and I hope it is great for them. I personally know some really nice crew that have gone over as CSMs so I want it to be good for them.