I used one back when I owned the scope. I thought it was easy to use and worked really well. Not too bulky. It saved my camera once as I dropped it on the asphalt and the adapter luckily took the hit. The only thing that I ran into was not all cameras screw on to the base to make it functional (just depended on the location of the camera's adapter input) worked better if the input was in the center compared to an end. Hope that makes sense. I now have a diff scope and use the TU adapter. To me both were similar in functionality and ease of use.