Some Kent Luxury arrived today before I'd shaved, just in time to try it out.
To give you an idea how I got on, at one point I wiped some lather off my hand onto my chin and a long horizontal plume just stuck there, motionless, jutting out an inch or two. Impressive! If a block of lard had relations with a cumulus cloud this is what their offspring would be like.
I think I'm in the fat camp
The puck was scrubbed into my wet face, like a stick. The puck seemed to dry out very quickly so I had to keep adding a little water, then some more, and so on.
Next the brush. I had no problem whipping up thick, creamy cumulus clouds, pausing now and then to add a little water. Very nice. Beginner's luck, I guess.
After that things went downhill. I added a big splash of water instead of a few drops and it thinned out quite a bit. The lather did not last long on my face. Easy to fix though. A rub of soap, a splash of water, a whirl with the brush and it's back. Not perfect, but good enough.
I'd still call this a successful, well-lubricated shave. Even if I failed to lather it up optimally, it felt pretty slick.
It sounds like a lot of people have problems because a hard soap like this doesn't come off the puck easily. Using it as a stick might help with that. I could feel a goo forming on the soap as I rubbed it into my face. I suspect the warmth from my skin, along with a little splash of water, melts a layer on the surface of the puck which then gets transferred to the face. Then it goes dry, add another splash of water, etc etc.
Even if you manage to get a good amount of soap off the puck, you can still mess it up by adding too much water. I'll be more careful next time.