The Kobun has a very slim handle. If you want a utility knife you probably don't want the Kobun, I don't think, and it also will look very scary to sheeple. I traded mine for a Spyderco Perrin Street bowie, which is a great knife. It will certainly cut, although it is 5/32" thick so it's not a pry-bar. The Temperance is a solid FB but it is much bulkier so I don't know if that suits you.
The Buck Alpha I can't speak to. you might want to look at the Gerber Yari, which has a lot of fans here on BFC. The Yari is definitely a SD knife, 4.5" blade w/o a lot of belly, but it can do chores & is stout I believe. It's a discontinued model, but Knifecenter.com still has some of these, I think.
the Camillus CQB Jr. is a nice knife of a similar "tactical" design, 4" x 5/32" blade, but it's sheath doesn't have a clip, so you'd have to have one made, or fabricate a clip (not that hard). Fallkniven S1 or F1 are very stout using knives, but no clip on the cordura belt sheaths, you'd need to have a kydex one made. Same with the Bark River knives, these are nice but no clip on the sheaths. Same with the Ontario Randall TAK. Same with the Swamp Rat offerings.
The Spydie Ronin is a small but very useful knife. Same with the Camillus Talon, although I don't know if you would want to pry with either of these, and neither has a clip. The Camillus Becker line is probably too big, and the sheaths don't have clips, although you could get a B11, cord-wrap the handle, fabricate a clip to the neck sheath, and have a nice performer that doesn't look scary for about $40.
Hmm . . other FB knives with blades between 3-5", preferably thick, with clipped sheath, decent steel, and in the price range of the Alpha or Kobun . . . well, the Cold Steel Master hunter has a 4.5" x 3/16" Carbon V blade, for about $50, which I THINK comes with a clipped kydex sheath, although they keep changing their sheaths so you'd have to be sure about that before ordering from a dealer. then there's the ENTREK cobra, which you might like but costs twice that of the Master hunter. Same with a Newt Livesay ICU, and you'd have to get one used b/c Newt's delivery times are unreliable lately.
Well, that's all I can think of off the top of my head, that seems to be in your parameters. You can find pics and info on these knives at 1SKS, or knifecenter, or knifworks, or any of thew advertisers here.I'm sure others will occur to me later. & you'll probably be getting more suggestions from other forumites in short order!