These keys are unusual if you're already coming from another OS but I've found them to be quite comforting after you get past the initial learning curve. But that's the point, there is a curve to everything.
I don't think it really matters what OS you use as much as the fact that you constantly try to get more adept at using it (w/ the underlying assumption that the limit is not infinite yet unattainable.. but that's another story ^_^).
