Why do we do any of it the way we do? Some of it is what a person likes, some of it is the way you were trained...and some of it is just habit.
Why do we (some of us) peg the shank? It's faster and easier to nail it, for sure. Why do some of us stack heels? It's faster and easier to buy pre-stacked heels and nail them on. Why do we burn or skive the edges of the vamps? The customer's never gonna know...OR care. Why do we make our own side welt and top bead rather than buy it from Texas Trim?
And on...and on...and on..
I twist the bristles on because I was trained that way; because it is a traditional and time honoured (proven) method of attaching bristles; AND I twist them on because it is THE most secure method I know to attach them to the taw. I hate...I mean HATE...having to interrupt inseaming to reattach a bristle. Short of breaking a bristle (very rare) I never...I mean NEVER...have to stop and reattach a bristle.
And finally, I twist them on for the same reason I do a fancy braid with the excess inseaming thread over the shank support--no good reason, I just like the looks of it and it's unique to me. I guess it all comes back to my basic philosophy about bootmaking. I don't want to work in a factory...not even one that I own and created. If I'd wanted to work in a factory, I'd hire on at Justin...and probably make three or four times the wages I make now. At a certain point we can throw out all the traditional techniques (too slow or too hard) and what's left? It may be faster and more profitable but it's not bootmaking, in my mind.
As for boar's bristles...I have them and...watch out!!...I know how to use them!