I'm not sure what the brakes have to do with it though? Similar hydraulic/mechanical disc brakes are used on virtually all mountain bikes around the world.
GRZ Black RAW with 250W Bafang motor, 12 speeds and 26 x 4.8 tires
Compared to my non-electric and non-fat-tire hardtail mtb this thing is an absolute tank. I originally only bought it so I could ride year around in the snow too but I love it so much that I basically stopped riding my other bike altogether. For riding in the snow it has to be electric assisted unless you truly want to suffer. Even now I almost never see any other bike tracks on the trails in the winter than mine. Yesterday I plowed thru a trail with half meter deep snow drifts. Even the hikers whose tracks I was following turned around.
In the summer time it has infinite traction and it just rolls over anything you throw at it. You can even ride it off the trail in the brush over soft moss and boulders no problem. The only better all terrain vehicle than this would be a horse.