I know you know a lot more about this than I do.
But it seems like you'd have to sharpen (edge) a knife quite a few times before you get far enough into the blade to made the edge super wide. Anyway, I'm enjoying using the system. I can get my old knives to sharper-than-new condition in under 10 minutes.
I know a rolled edge is impossible for me, but I think with this system you can do a compound edge or double bevel. I don't know enough about sharpening knives to know why you would want to do that though. As far as a cool looking edge, after finishing up with the finest ceramic stones, you can use leather strops and diamond paste to get a "mirror polish." This isn't my knife below, but it's an example of what you can do with this system:
