I hadn't heard of them. After reading your post I looked at a couple of web sites about them and watched a short "YouTube" about them. I was not very impressed. Maybe f I tried them I might feel differently but they looked like they could be some trouble. What happens of you inadvertently drop them? Will the spring action allow the rounds to fall out of the loader? And, how smoothly do they feed into the cylinder? The "splaying" factor built into the loader could make them feed more slowly. In my opinion, anything devised for rapid revolver re-loading will have to be much better than the Safariland comps....
I don't think that this loader can beat the Safariland Comp loaders. So far, nothing has.
'course that's just my opinion...I could be wrong...