I bought T&H Soap for bowl lathering a few months ago with zero success. Terrible lather. The lather would be airy and thin with poor lubrication, the blade would skip, and the razor would tug.
I started face lathering with a smaller stiff brush (rooney size one style one super badger) instead of my AOS cream with my big floppy AOS brush and WOW what a difference. Now The stuff is nice and slick and gives me better lubrication that a cream, I just go back to the puck after every pass or two. I don't get it, every time I think I've got something figured out with this stuff (ie. blade brand) it changes up on me.
I used to think you soap guys were crazy--I didn't believe in it because I thought it was better to be able to control the water content in a bowl.. Wrong