This shape has really caught my eye lately. I don't have any but need to grab one.
Fitzy, I have a few Mimmo pipes. His mouth pieces are so thin at the bit you might mistake them for vulcanite. Thin and narrow, but the pipes are usually pretty light. I don't think he uses bowl coat, which is a great.
The bugaboo for me is that the airways tend to be very constricted and require opening. For that reason I will not buy a bent Mimmo, although I suppose the bend could be straightened, drilled out, and then rebent. That's further than I want to go for a new pipe. Last point, the pipes seem to take ages to break in which I suspect may be due to the fact the briar is not old.
On the other hand, I'm starting to realize that I prefer to buy pipes that are already broken in with a good thirty year of smoking on them.