I still have an old pair of English schooling chaps, which I had custom-made back in the 90's. . .and I will still wear them on trail. I love having that extra added layer in cool weather, and it's a bonus when you're riding through areas with a lot of "little pricklies" that would otherwise catch on your jeans. They just bounce right off the smooth leather.
I vote "yes" on chaps. Better to have 'em and not need 'em, than need 'em and not have 'em. ;)
"Parelli horsemanship is just like painting by the numbers. You need absolutely no skill. You just put this color here and this color there, and when you're done, you have ... a mess no one wants." mp