I got the Sumit Viper too. its great, except im terrified of the climbers.. ahah im a big chicken. I like the ladder stands if its possible over the climber any time! but as far as climbers i dont even think they are more than 15#, they are so EZ to put on backstrap (backpack style) its great and the main reason i bought it. its really good, my two buddies got some climbers but liked mine better as well.