I have a pair of old, ugly, full-grain Ariats, with padding in addition to the leather on the inside of the leg. They're indestructible, and protect my legs really well on the trails. With the heavy leather and padding, they get hot in the summertime, so I got a beautiful pair of Riding Sport suede ones: Riding Sport™ Suede Half Chaps | Dover Saddlery
They fit great and are pretty cool in the Summer.
However... I wore the suede ones jumping this week, thinking the suede would let my lower-leg grip the saddle and horse better over the jumps. BIG mistake! The leather wasn't nearly heavy enough to protect me from pinching, and I now have deep-tissue bruising on my calves the shape of a stirrup-leather. I'm wearing my Ariats from now on, no matter how worn and ugly they are. The light suede ones will be only for sweltering hot days on light, easy outings.
I got my Ariats used for $15 8 years ago. Still ticking...