The decision to be made with respect to the end vise is whether the support plate should be mounted to on the inside or on the outside of the stretcher. Mounting the plate on the inside of the stretcher reduces the reach of the vise - it can't open as far, because the support plate is back from the edge by a couple of inches. But mounting the plate on the outside of the stretcher means that we need to add some support structure for the inner jaw of the vise, which the legs would have provided if we'd mounted the plate on the inside.
I like the idea of re-inventing the wheel. I choose to believe that while others may have considered these improvements, they just never got around to trying them out. Brain gets bored with status quo. So, I try to keep Brain happy with the occasional foray into uncharted territory. And I must say Brain has had some really good results. Thanks, in part, to you, and the Roy. You never know where a good idea might come from so I’ll check in once in a while. That and make sure to build it in Sketchup first.
While a strict figure for the bench’s weight capacity is not available, a quick browse through their other stand and bench products shows a general weight capacity well above most other brands. As such, while we cannot say for certain that this bench provides the best weight capacity, it is more than likely that it the capacity is similar to the other products in the catalog.