They're nice, but I prefer to avoid using many mid-punches before 6P+K because most players tend to hold that first and if my CB set-up is interrupted I get pissed.
UPDATE:
Tina's :6::P::P::6::K::41236::F+P: juggle works on: Kasumi, Eliot, Mila, Kokoro, Alpha-152, Pai, Hitomi, Leifang and...