I find this to be interesting. Wouldn't buy it, but the effect is neat.
Same for this. The contrast is a nice effect.
This, in my opinion, is ugly as hell. I just can't abide this kind of look.
Same here:
And this one, I find ugly as well
Even this, to my eye, would have been much prettier without the rustication. It's borderline for me.
Again... not my beach:
Maybe... but probably not. It's close.
I think it's all in the detail of the rustication, and for me, how fine it is. Coarse rustication looks very sloppy and ugly to me. Fine rustication is much more pleasing to my eye. And it really, in my opinion, completely hangs on where the rustication is placed. Many of the bad examples are coarse and slapped on to odd locations on the pipe. It seems like not much thought went into it, except to hide something.
The better ones, in my opinion, have an artistic reason for being there, and take into account the whole pipe.