Well they're overly complex, they violates the Gillette bussiness model (give them the razor and sell them blades forever) It's rather head heavy even compared to a TTO Gillette and you can't get new blades though I hear you can make a GEM blade fit. I have two, I collect oddbal razor but I've never shaved with it.
Would it be feasible to have someone like Lynn at SRP sharpen these blades? I have always been interested in getting a Rolls Razor or a Valet, but given the fact that the blades were reusable and may not be in the best condition I have always held off of buying one. But if a professional honemeister could make them shave ready again, might they be worth looking into more seriously?