I thought this knife could be a cool little EDC for when I'm in places that allow fixed blades so I went ahead and bought a TOPS Unzipper. Initial impressions were good, but I did not like the bolster/heel because it would get caught on draws from aiwb or in the pocket. I also hated the pull the dot loop it was setup with. I went ahead and changed both those things using a DCC clip for the otherwise great sheath (required drilling another hole) and I reprofiled the knife with my Dremel, then cold blued the bare metal. I'm very happy with the result and kind of wonder why they don't come like this from TOPS, but oh well. The only other things I would change are making the grips larger, and maybe grinding down the lanyard loop but I'm undecided on the lanyard loop part.
This is my first TOPS knife and very far from my first knife- I'm overall impressed. I am now wanting to order a C.U.T. 4.0 as well to mess with.