I have been using a Black Widow stringer, but just picked up a Webster stringer. It's for a recurve or long bow. It's all made out of nylon strap, even the pockets.
I like the feature, it has a shorter pocket for short bows, it's pretty neat. I have only used it a couple times and it works great, and I guess I'll see how it holds up in the future.
I have always used a stringer and will continue for a recurve and long bow, but I have had people tell me you can use the step through with the LB and it will not hurt it. For a few dollars its better to be safe.