Looks like it would be useful, but I doubt I'd buy one. Why not?<br><br>I probably carry a bigger keychain than most, but I already have a Leatherman Micra, Photon 2, and (gasp) keys. I use a "decorative" carabiner (lots of companies give them out for free) so I can add and delete items as necessary. So, if I throw on the Mini Fox 40 (soon to be filed down) from my pack and the compass/themometer from my jacket, I'm almost there. Just have to add the P-38 and a "spy capsule".