I have carried horizontally upon occasion. I have a Schrade leather belt pouch that I think was intended for their folding Hunter. I found it for $6 brand new in a junk store. It offers the option of vertical or horizontal carry. At the time, I had a Leatherman super tool with no sheath. I carried that tool in that sheath for a while. Eventually I switched out for a super tool 300. Most of the time, I carry a wave with lots of accessories. The Schrade horizontal carry does not have enough room for accessories. As a result, I usually carry vertical my wave with accessories. Sometimes, for a change, I use the horizontal Schrade pouch with the super tool, and Ilike it a lot.