Mine also did come with the attachment for belt loops, but I haven't tried that yet. I have been using the paddle for a few weeks, then I will go to the belt loops. I want to give it a nice test both ways. So far my issue with the paddle is that since I wear my pants high the curve of the paddle pushed into my side which is only a minor nuisance. The thing I am not liking about the paddle most though is that it tends to want to sag on that side more because of the smooth plastic that is against my cotton under shirt. There isn't any friction so it wants to sag a bit, not a big deal, I just tighten my belt more.
The paddle holds on so tight though that I think I could get the holster off faster with the belt loops, It is kind of difficult to remove it from my pants and belt. I can see how someone said once that you could pick the person up from their paddle. It is definitely more secure to the body than other paddle holsters I have used.
I am probably going to start using the belt loops in a few days and see how those are. I am sure I will like it better but I wanted to try the paddle out for awhile so that I know exactly how it performs for me.