I was fortunate or unfortunate depending on how you look at it, in regards to how I came upon my spare holster. After snapping the clip from the holster my wife contacted OtterBox and they were nice enough to send us a replacement free of charge. I believe that one poster mentioned the shock from the fork and stem but I do not think that it will be much of an issue compared to riding in my pocket or bag.
I am not sure if my setup will work with stems on other bikes, but if anyone has tried it I would be interested in their outcome as well.