My setup is virtually a mirror-image of Mike's (even down to the iPod control!), only difference is that I have the V1 on the left side instead of right. I use an audio feed for the V1 alert. It all works very well for me.
The V1 is mounted on a ZTechnik mount (a very well made piece of hardware I will add) and the GPS uses a Garmin motorcycle mount bolted to the BMW mounting plate (a BMW part that mounts to the handlebars and has the four-hole pattern that accepts the Garmin motorcycle mount.) It is not expensive, I'll see if I can dig up the p/n.