As far as I know the gauges can face any old way as long as the tank is upright.
Also IIRC you can run all beer off of the CO2/N2 mixed gas so you'd only need the one tank and something like this:
http://www.micromatic.com/product.php?pid=751-019
Maybe the micromatic guys can confirm.
Maybe I should get commision around here a buddy of mind just but a new Bev-Air BM23-2 from 'em
