I was bored and thought of this idea....

This product has the right idea, but it didn't get good reviews....

Undercover Sun Visor Holder - Radar Detector Accessories at Radar Busters

I was thinking, take this product, cut the pocket on the right.

Take the V1 visor mount, connect to the V1.

Put the V1 inside the pocket, make a cut on top of the pocket for the visor metal mount.

Make some cuts for the front and rear antennas, speaker hole, RJ-11 connector.

Put the V1 in the modified pocket.

Install.

Should be pretty stealthy eh?