The only difference between Pentatonic I-VI and Pentatonic I-II is the C on hole 5 and hole 10. On Pentatonic I-II it's on the blow, on Pentatonic I-VI it's on the whole step bend giving us one more whole step bend per octave; the four to five bend. Further, we can bend from the five to flat-five to four. Of course, the five to flat-five to four on the blow like we have on Pent I-II is a nice move also. It depends on your mood or inclination.

Same thing here, the only difference is the C. Now we can do a trill between the bent Bb-C and the C-Eb and we have a four hole glissando on the bends. But, we now have only one note on the blow reeds for catching our breath. It's a trade off.

With the C being on the whole step bend rather than the draw reed here we get a 7b to 1 bend and we still have our trill (C-D), very nice.