Totally ideal, here is why.
VERY LIGHT-- Synthetic, form fitting, and stiff foot bed with just enough toe play for on and off the paths. Stable heal and side wall for weight.
I am 9.5 plus and the 10 is perfect. Actually I am a 42.5, but the 43 fits with enough room in the tow box for the descent and heavier socks. I always where heavier socks and add silk, merino in the winter.