I can't really speak for a TM DSF, but I was rocking my NMSFNO in a Chuddy Bear sheath. While I admire the quality of work of leather crafters, especially Chuddy's, I find that they really add alot of weight and volume to a carry system. For me, it was quite unpleasant to carry with it due to its weight but more so because of it's bulkiness. Carrying it on my belt pulled my belt and pants down alot. They are very thick. Now I carry a SARsquatch in a kydex drop sheath (I think it's Okuden) and am MUCH happier. It's only a 1 inch shorter blade and .187 compared to .25 from the NMSFNO, but it's a night and day difference. The Chuddy is 1 inch thick and the kydex is about 1/3 inches thick or less. Having experienced both now, I will go kydex everytime. There is something to be said about good quality leather work, but for my purposes I prefer kydex all the way.