That thing does not look the least bit comfortable. For $270 I'll go with a summit. From what the website shows there is no way of using it without using your leg muscles. It's like you are repelling, but in the same position for hours. Lets face it your legs are gonna get tired fast and then you are gonna be miserable. And another thing, when shooting you have noway of using your hips and legs to shoot, so you are using all arms when taking a shot, and your not going to be as accurate. Just my thoughts.