I bought a pair of these direct from 5.10 when they had free freight and had size 14 in stock. I've been wearing Low Impact for years and have been really happy with how the Low Impact fit.
Kestrels on the other hand… I've never had such awful blisters in such quick order from footwear. 2 blisters on one foot, 1 on the other. On top of this they are hot as hell and are really awkward to clip in with XT spds. The metal zip closure thing is a pain and sticks out enough that it catches on trail stuff and loosens off while you ride.
All in all I give this shoe a solid 1 out of 10.