Well, here they are used for MANY reasons; brush, briars, and general things like a horse biting, a bull swiping at you, etc. There are chink, shotgun, and batwing chaps. I use shotgun (full) but its all personal preference, depending on what works best for what you are doing. If you ever get used to them, you'll never want to be without them!
"If you talk to the animals they will talk with you and you will know each other. If you do not talk to them you will not know them and what you do not know, you will fear. What one fears, one destroys." - Chief Dan George