"All that much of an issue" isn't a terribly precise phrase - and in any event, misses the point. At least, it misses my point - which is that wood (and obviously, synthetics as well) offers the maker maximum versatility in shaping the handle to his / his customer's ergonomic ideal - because it can be shaped in all dimensions and on all surfaces.
I love stag - but the piece either fits your hand or it doesn't. You can't shape it too much without detracting from the beauty of the stag.
I'm not disputing that wood and synthetics are easier to shape, I just don't agree with your point above. Mortised stag or stag carvers can be shaped into ergonomically correct and beautiful handles. They are very common in that makers do it every day. By the way "too much" isn't terribly precise either.
It's interesting that
all your examples are stag scales, mortise fit to the tang. When it comes to tapers and carvers, of course, the dimensions are more firmly cast by mother nature. But even in this case, the circumference of the scales can be shaped, and depending on how much material was there to begin with, their thickness can be adjusted. But the surface of the stag itself cannot be shaped. That's a pretty big "don't grind here" zone, relative to the entire surface area of the handle. You can't add much in terms of palm swells or dishing out the back third of the handle. You are pretty much shaping in two dimensions.
Not too interesting that my examples were all mortised. I just prefer knives with mortised or frame handles.
Here's three more examples (stag carvers/tapers) from my collection that I assure you have very ergonomically correct handles and not bad looking, at least in my opinion.
Can you still make an ergonomically sound handle this way? Of course. I very much doubt anyone would dispute that. Does the maker have
more options to realize his concept of superior ergonomics when shaping wood? You bet he does.
And the benefits are by no means restricted to the surely uncommon circumstance of shaping a handle to an actual mold of the client's hand (a practice in respect of which, I will confess, I am quite unfamiliar).
Yes, very uncommon. That was my point.
It would be possible to render any of the handle designs you have shown in wood or synthetic? You bet. You wouldn't have the natural stag texture, but texturing wood or synthetic is not exactly hard. It would be pretty much not an option, however, to render any of the handle designs below in stag. Which is rather the point.
Depends on what type of wood texturing you are referring too as to how hard and at what expense. From experience I can tell you, a good popcorn or deep bark stag handle is hard to beat in a field dressing situation.
I'm not against stag. It is probably my single favourite handle material, period. But it does present limitations from a design standpoint.
Roger