ive actually never used a climber because I'm not sure how picky you need to be about choosing a tree. to me, it seems like you would need a fairly straight tree with no branches sticking out until the very top. thats just my assumption, and so i have never bought one. i dont know anyone who has one, so i have never had a chance to try one, and i dont want to buy one just to find out it wont work for me. i would be interested to hear anyones thoughts on how versatile they are when it comes to tree selection, because like i said, seems to me just from what i have heard about them that you would need a straight, tall tree with no branches below 15 or 20 feet, or however high you want to climb. i dont have really any trees that fit that description where i hunt, so i have never tried one. though they do make some very light weight, comfortable ones now, i would be tempted to try one if i thought i could get some use out of it.
so far i prefer ladder stands all the way around simply because they are easier for me to put up than hang ons. even with a second ladder to climb, i find ladder stands so much easier to put up than the hang ons. i have a couple hang ons and i use them, but i rarely move them during the season because its such a chore.