Horses for courses I guess, I never found a great deal I’d regard as flowy, I’m more a forest ST kind of guy I guess.
That bit above Vallorcine/Chatelard is lovely but only about 500 metres long IIRC (I’ve been gone a year now). I can’t be arsed with loads of on-the-brakes steep switchbacks.
I hiked and dropped Col de la Terrasse -> Loriaz on my snowboard once, would have been a struggle getting a bike up that way.
Anyway those days are gone, feet firmly planted in the Surrey Hills nowadays.
Everyone should go to Chamonix if they get the chance, there are few places in the world you can sit in the back garden enjoying a pastis and look at a glacier in the pink sunset.