In reply to Somerset swede basher:
I always do it as a day trip from the carpark and travel light in good summer weather. So I'm not too focused on time. Back on the ground after maybe 10-12 hours? But that includes lots of sitting around soaking up sun and views.
Maybe 1.5-2hrs to the hut. <1hr chill/eat on the slabs above. 1hr to the ridgeline. Another 1-1.5 hrs along ridge to first or main peak depending (15 mins between pks) . So 2.5-3hrs from hut should easily get you up.
I've never gone back L along the ridge as I'm usually wanting a trip upwards as high as poss from the ground. But it looks like an easier walk, and people do regularly go along the entire ridge.
(I didn't know I could post pics as a non-paying member, but will try below. Pic from the 1st pk back down the ridge, showing refuge and valley. Also views.)
The ridge on the other side of the Tour Glacier up to Bec Rouge Sup is also good fun. Very long. Easy walking, some scrambling. Awesome views.
Post edited at 11:21