i myself have a boar brush (so cheap it doesnt have a name,,,it came with my disposable straight razor blades). i've been using it for more than a year and it never sheds.. maybe a brsitle or two since i started using it. i shave 3 times a week and i use it everytime. but, after using it i rinse it very well, dry it as mush as i can with a cloth and then let it sit.
maybe caring for the brush has an effect on the shedding. i never tried badger though :(
but somehow i like my brush because it massages me at the same time while lathering, i mean you feel the bristles on your skin...does a badger
do this ?