I am one of the lucky League of American Bicyclists Licensed Certified Instructors that received one of your free (promotional) products.
I selected the HeadsUp glasses mount mirror, even though I have had mixed results with helmet mounted mirrors in the past. My preference has been bar mounted mirrors. I am happy to say that on my first journey with this mirror last Sunday – a pretty sketchy commute to teach a Group Riding Skills class on some busy streets – your mirror worked great. It took a little while to find the right adjustment, but I found after some practice the mirror was quite useful, especially with the heavy traffic I encountered. I was able to monitor the traffic behind me and consider escape routes in front of me at the same time. Much better than constantly looking over the shoulder, which would have been impossible.
Thanks again for offering us (LAB LCI's) such a great product for free. I am looking forward to trying out the Roadie bar end mirrors once they are available.