So, some of you may have seen the post about my newest addition, the so far unnamed Weimaraner girl. I do want to get her a BlackDog harness; I think I will like this product very much. I was a fan of the Easy Walk harness too, the idea of either one is great. But I do like the BlackDog harness better. So here's my question...I understand the concept of the double-ended leash that attaches on the back and chest, but is it either necessary or all that much more helpful? I really don't think I will need the double-ended leash, but then again I've never used one so I just don't know if there is a big benefit there. Anyway I just want some input on the double-ended leash.....? Thanks!