Pace,
Sorry for nit-picking, but it's Courchevel, not Courcheval.
Also, the French "qualification montagne" cannot be entered on a UK part-FCL licence as a "rating" until the DGAC presents its conversion report to EASA (due before April 2018). So for the time being, we just get a nice letter in French (I had to think about that...).
That said, the qualif montagne is fun to do, is valid for life, and the aforementioned French missive is accepted in lieu of the Part-FCL rating by all relevant EASA member states.