I'm not sure that it is a font in the classsic sense. If I remember correctly, I think I've read where the Alembic script was deisgned by Susan. Perhaps if you ask nicely...
However, MD's initials look like a commercial font.
A close, commercially available font is Arnold Bocklin, not sure that's spelled correctly, it was the rage about 30-25 years ago in art school.
Mike