I'm still concerned about thin, watery, and non-existent lather (i've tried 6 bases). Has anyone tried... or does anyone have any opinions on, adding a bit of shaving soap base to a regular M&P base? Seems like it would have to make richer lather and be gentle to skin. I can think of a downside... perhaps it would soften the soap? But M&P tends to be really hard anyway.