I never add it before lathering, never works for me, I face lather until I have a shave ready lather then add it, my face disappears under marshmallow like creaminess! same with bowl lathering, I always add it in after. I get it so I can slap my face with my brush, thats how thick I aim for... its nothin kinky... honest

I mix glycerin and lanolin in a small bottle. I add a couple drops to my scuttle when making lather. I find pretty much everything benefits from a 2-3 drops of this mixture.
I'll need to try mixing lanolin with my goats milk and shea butter soaps, great idea