There is no good answer for this, unless the leather or webbing is both pliant and a loose enough fit, to get it over the frog stud without undue stress. Back in the '80s I was at a show in San Diego, and a fellow collector had just acquired a S84/98 T3 in a blue Luftwaffe tropical frog. The bayonet was of average condition and he really bought the piece just to get that frog. I watched him attempt to get the frog off the scabbard. He almost had it when the webbing ripped from the 12:00 position to the top edge of the pouch (the "Achilles's heel" of these and many similar frogs). Oh...the horror! He ultimately made a fairly decent repair (much easier with webbing than leather), but any attempt to ever mount that frog would be a big mistake.