Well, I had my first pruning field trip today, and not enough time or supplies for leather working, so I ended up taking Randy's silly suggestion and fashioned a holster out of duct tape. You know, a quick, temporary solution -- wrap it around sticky side up, then wrap it again sticky side down. But it's me, so I made it a little more complicated...
It's a perfect, snug fit, so you can hold them upside-down without the pruners falling out. And, uh, good grief this is dorky. I'm not a duct tape freak, but I kind of love it. Eventually I'll grow up and make myself a more professional looking sheath out of leather.
Maybe.