I can't speak for the vigor, ended up with a begleiter instead. It was supposed to be my poor man's BM 940 and it mostly delivered. It's less gentlemanly and I think it's actually a great EDC knife. I actually think it feel substantial enough in the hand to be comfortable, almost like a longer handled mini-grip. I think the 940 has a considerably smaller handle, for a comparison. The beglieter is also a very flat knife in that it doesn't have a lot of contouring and such like spyderco's do, but I actually like that for the knife that it is. It packs into the pocket pretty nicely and the spring clip is acceptable (nothing special there).
Personally, I feel the knife blade could use a thinner stock so it would be a better slicer if it were to be considered a gentleman's folder. I feel it's almost like an "production floor office" kind of thing.
I've become quite fond of the begleiter after figuring out how to flick it open as mine has a fairly stiff detent. It would see a lot more pocket time if I didn't have a 3" knife law in the city I work so it gets stuck to home EDC where I'm allowed a larger knife. I have the green beglieter which really grew on me after a short period vs having another black handled option. It also matches my carhartt coat well which just added a little smirk when I discovered that.