No, but I have read about it.
Purity and the preservation of tradition is one thing, but, even as a historian, I'd argue that sometimes, one can take it a bit far, for we can run the risk allowing modernity and easier ways of doing something - in.
However, compared with the utter ease of landing my Nikon F100, or F80, (or even my lovely Pentaxes), loading the Leica - shall we say, requires focus and close concentration.
I am rather fond of and actually enjoy using the Nikon F, although I will take using an F2 any day over an F(the F2 essentially takes everything about the F and tweaks or refines it into a nicer to use camera).
One of the things, though, that made the original F so wildly successful, though, was the fact that it took a whole lot of features that were already present in other cameras and combined into one easy to use, well integrated package with a comprehensive lens system.
Film loading in the F is still somewhat more involved than even an F2 as the entire back must be removed(the hinged back at the time was reserved for the consumer-oriented Nikkormat) but at least it is significantly easier to load than a Leica in any form. In fact, the only thing really complicated about loading an F is figuring out where to put the back while it's off the camera, but it can be done in the field even if it means holding it between two fingers or up in your armpit. Of course, the F2 solved that problem completely with a hinged back.