I've been giving Cella a chance lately and still cannot figure out if I like it or not.
I struggled lathering it and then tried the "Marco approach", which worked but was messier and required more time and effort than I usually spend lathering. I got a (lot of!) nice lather, but I can get what to me is equally nice or better lather with Tabac or D R Harris in significantly less time.
Of course I don't mind investing time and effort to get a better result; after all, I am sold on wet shaving even though it takes me significantly longer than slapping canned gel on my face because it pays off. But in the case of Cella I'm not convinced the extra effort results in a gain.
As with most things around here there's a learning curve so these initial efforts probably don't yield the best results possible. Because of this I wonder what is it about soft italian soaps that would make it worth it to take the time and learn how use them to their full potential.