Rich A got one and reported on it in this thread from July, 2013:
http://wildguzzi.com/forum/index.php?topic=63431. He liked it, at least initially.
BTW I also reported in the same thread that I was going to buy some small stick-on "crescent blindspot mirrors" instead. I did do that, but now find that they are so small that I don't seem to be making the effort to look at them very often. I rate them a failure, at least for me.
As for the Rider Scan mirror, I'm thinking lately that I need to pay more attention looking directly behind me, at stoplights. Looking to the right and left is not so hard, since I've gotten a helmet with a better field of view than my old SparX.
But maybe Rich A will chip in another report. In the meantime, check out the earlier thread.
Moto