[quote]Is there another piece that attaches to the pin on the frog so you can wear it on the belt or do you just slip it between your pants and belt and it'll catch?

Like this.

That is beautiful leather!

This one has no other parts, the stud holds it from falling. Rides well, moves where you need it to. I have only worn it with a heavy nylon (Specter Gear) belt so far.
The whole piece of kydex that the stud runs through can be removed.