narco,
yes the 805 TSEK has a 3.93" blade. The 806D2 AFCK is 3.96". The latter is regarded to be a classic by many. There was a push to get it produced in an Axis lock for quite some time. It is a knife which can be opened quickly, with one hand - flickable. This is possible with quite a number of BM Axis locks actually, especially by loosening the pivot screw, with practice. But these two are about the best for that though - due to the heavier blade weight. As a consequence, you usually wont be faced with having to accept a compromise in terms of blade play, which can occur when the pivot screw is loosened - wont need to do that in other words, with those, most probably.
But as an EDC? Those are quite a bit bigger than most would consider a good fit for that description. Too big in the pocket, for one thing. As for how it will come across, well that depends on your environment, as jonmoc says. But let's say you are a student on a campus somewhere. I don't think it will go down well there, not at all. A better choice would be a 705 - that is by far the choice of the majority of people who know their Axis folders, as an EDC.
Oh also - plain edge.