We want to get a double-ended roll top bath with traditional style bath/shower mixer tap, and it makes sense to us that we could get a wall mounted slide bar to attach the shower head element to when we want to use it as a shower. But I've been searching the net and can't see anyone who has done this, is there some reason why not? It seems silly to get a whole shower system with separate controls when there's a perfectly good shower already attached to the taps! Thanks.