I've gone down this route in the summer. Not fun. Left the top around 1 pm and got home around 10:30 pm fairly dehydrated. Love that I did it though.
I've descended this one as well in the summer. Probably one of the most exhausting descends I have done. It is much, much, much further than it looks from the summit. I'll never repeat it unless I have skis on snow.
Superb route. I loved the scenery and the surrounding environment. Spring is a great time of year to climb this mountain because the contrast of white on the mountain and green in the valley is astounding. The glissade down was one of the best ever.