Rob, I know what you mean by, "the feel of them", bit like wire spoked wheels have a certain feel as well.
Actually, those brakes when correctly adjusted and bed in, are very efficient and will continually stop the bike from quite high speed, stop after stop, after stop. Something quite a few people didn't appreciate then, nor these days.
At the same time these brakes appeared in 1974, the 750SS Ducati, Laverda Jota and some other bikes appeared with two finger tyre squealing Italian brakes fitted to the front. Whilst the application of the front brake lever on bikes fitted with those brakes gave an instant hard hit, they were about equal to the softer feeling BMW brakes overall.
In the Castrol 6 hour production race at Amaroo Park in the Western area of Sydney in that era, where bikes had to run absolutely stock brakes, no one particular type of disc brake brand seemed to be better or worse. In fact in 1973 (I think) an R75/5 ran third outright on a very tight race track that used brakes constantly.
Rich, it really does look good.
Mick.