Well I find my drum brake on the back works great with a good disc set up in the front as we all know the front brake does all the work and In 43 years I have had no problems with my rear drum except for a circlip mount brakege in the drum housing, but that another story.
Most new Norton owners have troubles with right hand gear changes after riding left gear change bikes all their lives and want to chage the other way if they could, but I do perferr the right gear change over my moden bikes, but I have no problems riding both ways changing from both for over 45 years of riding.
Ashley