Hi-

I use a mug (pewter) to make whip my lather in. This is after loading my brush with soap by swirling it around on the soap puck and adding glycerin to the mug.
I'm curious about the use of a scuttle, as I enjoy warm lather. Currently I soak my mug and brush in hot water prior to loading the brush and whipping the lather in the -hot water- soaked mug.
I'm rather new to this, but I think you could get away with a mug and brush, for now.
Beware acquisition disease, though...