Could I just load, scrub a surface, and rinse 20 times to break in. I am considering a Semogue 2000, but I don't want to have to attempt to shave with it 20 times,
As I understand it, what helps split the ends of boar bristles are the wet/dry cycles. Boar bristles absorb water unlike badger hairs and synthetic fibers. Expansion and contraction from being wet then drying causes the split ends and the bristles fibers to break down over time.
It took 6 solid months of every other day shaving with my Omega boar before I called it broken in. At around the 6 month mark I noticed the tips starting to turn pure white when wet.
Since I took those pictures, the white ends have gotten a little bit longer. I think, once the entire length turns white the brush will be worn out, but that would take many years. It still has loads of backbone, but those tips are as soft as a cloud.