I did a lot of mounting location testing for my V1, and found GREATLY reduced reception in the top case or side cases.
I did my testing in a mall parking lot where I had a Ka band door opener signal to use. I found a spot in the parking lot where I had near full signal strength with the detector having a clear sight line to the emmiter. I then moved it all around the bike, and tried it in multiple locations trying to find a "stealthy" location. I originally tried it mounted against the top of the top box on the right side, no good, speaker grill blocked front recption, but rear reception was good. Moved it to the center where the document box is located, still good rear detection, and good front until I sat on the bike. It will not see through people well at all. I could get the signal indicators at just about full strenth, and leaning over in front of it would reduce the signal to just 2-3 dots.
I tried side case locations as some had done, found that to be bad. It would have good reception to the rear, and to the front only on the side that it was mounted on. Directly ahead was reduced, and just about any angle to the opposite side was reduced to near zero because of the engine/transmission blocking it.
I finally ended up with it mounted in a Pelican watertight box mounted permanently to the right wind wing by the windshield. Good reception front and rear, although rear was reduced if I was between the source and detector.
Basically, the detector has to have good line of sight "view" of the radar source, with no metal or people in front of it. It will see through plastic fine, if not painted with metallic paint. If you try too hard to "stealth" mount it, you will reduce the usefullness of it considerably. Don't worry about blocking the Laser detection, in over 75,000 miles of using a V1 found that to be practically worthless anyway.