I second the Ibtanked. Go with the 19mm size. It looks perfect.
I saw they mentioned 22mm
tanks will be available soon too. With something like the Hippo or a Pro-Ring (maybe, they can cut off air flow) it'd look very sleek.
I've got an AGR on my full size right now, and it doesn't look bad, but its tall & leaves something to be desired in the aesthetics department even with a pro-ring.
A
tank in the loose regards, the AGA-T looks stunning on a provari with pro-ring.