I have both. I wear the tibs way more. The kutana stretch way to much and start getting really baggy after an hour of walking. So not my fav. The tibs have been durable for me. And I have been through some crap with them. Did a barb hunt at 80 degs in the cactus filled desert and they held up the same as any other pant in that crap. If its gonna be super hot....tibs all day.
A non hunting brand pant I wear alot too is the Kuhl Renegade recon super good in warm weather and durable. Elastic waist is nice too