First off ... I'm thrilled to see all the input on this! It is appreciated. You know, I don't know squat about knives, really, but I'm picking up a LOT of info in a very short time here. Great site & a great bunch ... I feel much obliged!
Jason ... That "Woodswalker" sure is a neat little knife AND sheath, and I envy you your squirrel woods. Squirrels are kinda scarce in my area, except for the little red bastid variety. Used to hunt the gray and fox squirrels farther south, and I sure do miss it.
Don ... I'm sure you're right that there can't possibly be ONE knife that will do it all with any kind of efficiency. As it is, I use one knife for field dressing (it'll be 2 next season), another for skinning, and a couple more for boning and slicing and trimming the meat. I have been looking at some slimmer "compromise" knives in the hope of finding one that is better at making that anal cut, while still beefy enough and of a shape and length that it still works well for making that long main cut and severing the windpipe. I'm no longer looking for such a compromise ... I'd just as soon carry 2 knives. I salute you for even attempting such a quest, though!
Charles ... I do believe you are on to something! I would think that somebody, somewhere must be making such a specialty knife to sell.

I mean, there must be a market for such a thing. I was imagining something similar to a fillet knife, but about .080" thick for a little more stiffness, 4 to 4.5 inches long, and not wider than 5/8 inch at it's widest point. Your 1/4 inch width may well be the way to go, though. (Should be able to remove hemmoroids with that baby!)
rdangerer ... Man, thanks for all the tips, insights, etc.! I gotta tell you, though ... my pulse is really picking up here, and my hands are getting sweaty!
I've never owned a custom made knife, and I sure don't NEED one. But I WANT! I NEED! No, I don't need. BUT I WANT!!!!!! This doesn't seem like an adult state of mind. I tell myself that I still have kids in school! Its not like I just have way too much money. But I COULD sell a gun! Kinda went overboard with that addiction. Yeah, probly could sell a gun. Is this nuts, or what?
I appreciate your looking into the slimmer Dozier models, etc., but I've quite painlessly resigned myself to the idea that I am going to carry two knives. If (dare I say,"when"?) I do order a custom knife, the first one (WHAT?!!!) will be a shur nuff genuine 100% full-sized dad gummed DEER KNIFE. I like a 3.75 or 4 inch blade, about .150" thick, straight or very possibly a drop point, and a bit narrower than the usual, as you suggested. Oh yeah, it gots to have either wood or stag scales. Eight inches over-all length or just a wee bit longer. Any good steel would suit me ... especially if it means a real jump in the cost. I'm sure it will be a while before I'm ready to send in the order .... there are so many different makers and designs that I ain't seen yet, you know? Sure is fun trying to sort it all out, though.
Thanks, y'all!