A true Loveless novice here: I've never owned more than four Loveless' at a time (I'm not a rich man, and my Wife can only stand so much

), and will usually sell one to acquire another, more appealing-to-me Loveless. One of these days I hope to acquire a Delaware Maid. My current pieces:
http://www.bladeforums.com/forums/showthread.php?t=597911&highlight=professor
At any rate, even through the chapters of Loveless knives (apprentices, etc.), there is that common theme that you've all touched upon nicely. There is a feel, a look, and a simplicity that is recurring, but that I love the most about Loveless knives.
To me, the "classic" Loveless knife that is so often done in other makers' renditions is the 4" drop point with a nickel silver bolster, green micarta scales with red "lipstick" liners, and nickel silver handle bolts; all with that characteristic contouring that you've mentioned. Variations on materials tend to occur, but the root style always tends to shine through.
You guys hit the nail on the head in regard to the mystique that exists as well. It's this mystique that drew me in, to be sure; this and the fact that Loveless knives are today so deeply rooted in knifemaking culture, as it were.
To a very different degree, fwiw, the same mystique exists with Chris Reeve Knives, specifically with the Sebenza. It is what it is to everyone else, but to me, it is user-grade perfection whose style has seen many interpretations over its near 20+ year life span.
Random thoughts, I know, and likely straying from the OP's comments on Loveless evolutions, but it's always cool to chime in on a Loveless thread. I've got a Joe Cordova-made chute knife that he made under the tutelege of Loveless in the early 1970's that if it weren't for the logo, I wouldn't know the difference; that was the basis for my tangent.
Kevin Jones, holler at me sometime. Not sure where you're at in Virginia, but I'm in Roanoke and love to talk knives over a beer if you're ever interested.
Y'all be cool.
Professor.