1. Probably not, but when I'm working, I do use it often.
2. I usually carry 3 knives on me daily.
2a. Small FB (A HAK), which is an EDC, but rarely gets used (More for SD & weapon retention needs).
2b. Modern folder. For work that gets used the most & typically there's no rotation per se, just what I feel like. It's usually among a few knives & depends on what I'm going to do &/or where I'm going. Usually a Salt, higher end folder (Seb, Umnum, or maybe a custom), an Emerson, & maybe another folder are among the ones I choose.
2c. Slip-joint. Most rotated of the bunch. Right now, I have a group that enable me to carry a different on each day of the week (Production & customs). This group don't get used as much as I'd like. I carry a slippie because they're different & if I'm around a group of people (Not co-workers, though), then I'll use the slippie as they tend to be "sheeple" friendly.
Unless it's for work, I don't think most of us use our knives as much as we'd like. Now, of course, if we go camping, then some FBs usually go along & those get used quite a bit.