I don't use the summit but I do use a climber and prefer them because of the portability and it's a seat your use to no matter where you go.

One thing that I find helpful besides the folding saw (a must have) is to bring a few screw in steps with you as well. Sometimes you may find a perfect tree to climb but you have to start up to 10' off the ground because of a big branch or the trunk splits up higher. The steps will allow you to hunt those trees.