I saw a youtube of a guy doing ME OHS in a cage. The bar was hanging in two loops of tow chain, so it was hanging there he assumed the position and did the OHS, then lowered back down to where the bar was supported in the chains. It was not quite as impressive as if he did it without. Without the fear of failure, you know what I mean?
I like your idea better. However, it does seem that one can get a lot from OHS a lower weight with no real fear of having to dump it.