The first time we folded ours down on our 97 TJ we trashed the drivers side hinge. It was rusted and didnt turn, just sorta peeled the steel itself! But our jeep lived its whole life in Ohio. Just a tip!
I haven't done it in my jeep, but I used to have a 67 Bronco and I put the windshield down a lot when driving in the woods. It's great. The only bad thing is going down old trails, every now and then you'd have to dodge spiders