So, the only pack film left are the 3 Fuji films: FP-100C, FP-100B, FP-3000B, with the second one being marked as discontinued. And all these films are for 4x5" cameras. So - in other words, there is no pack film left for medium format

It seems that better solution for the prints on the go is the 'non-analog' one (Polaroid recently introduced new mobile printer - the GL10) ...