A Clipper is best carried on a paracord loop, cross body. That way you don't loose it if something happens to your belt. Gives you a useful 4-5' of paracord as well.
If you do want to carry it on your belt then a scandinavian carry is probably your best bet. Take 2' or so of cord, pass it through the belt clip, take both sheet ends and pass them behind the belt. Half hitch the cord and you are done.
Look at the Michelle Blomdeme video's on bushcraft.se.