Well, the big benefit of mounting the SS motion is that it extends the ZIGBEE range (which if you’re using presence sensors is the range you need extended). The other motion sensors are z-wave I believe.
I thought about doing this too myself @dawgonking. I had two solutions, neither of which worked for me. My first attempt was with a dome from a security camera I had. Nice clear, small… just barely bigger than the motion sensor itself… but that was part of the problem… it was no big enough. The sensor wouldn’t fit inside.
My second idea was to use the top from a CD spindle. You know those spindles of 50 blanks CD and they have that cylinder top on them? I figured was thinking about mounting it on the underside of the eave on my garage and then gluing/taping this over (under?) it to semi-protect it. I almost went down this road but I was worried how it would look and getting power to the area might have proved hard as well.
In the end I mounted the sensor in an upstairs window facing down my road. It works very well to extend the network, but I do lose the “motion sensor” part of it.