~why are there still two showerheads?
Two showerheads is ridiculous, IMHO.
I would like to have two showerheads with two sets of controls, but on opposite sides of the tub. Low-cost practical, and even luxurious. Accomodates bathing for two in a time pinch, or even when you have lots of spare time.
~Is this a stand-up shower or over-the-tub setup?
Over-the tub.
One of the odd things in NYC (and I have not seen it elsewhere is that the long side of the tub (which is against the wall) sometimes contains the controls and the shower-head, rather than the shorter "ends" of the tub.