I'll add an agreement to some of the other posts: while I prefer my tree saddle first, and most any lock-on second just because of the way I hunt, if I had to pick a stand for comfort and still be able to shoot out of it I'd go with the Summit Viper too.
I used one of DW's on a hunt with him and Skyler and found it very easy to adjust to the tree, very easy to climb with, able to shoot even with the bar with the right positioning, I felt very safe, and danged if it wasn't the most comfortable I've been in a tree...as if I were sitting in my den at home.
If I was looking for a climber I'd look at everything else first, then this one last. Bet you'd go with the Viper.