Unless I am in a studio session or I'm doing fast quick photography (i.e., weddings), I never really feel a need a need for 220. Even when I feel a need, it's not like I'm cursing the heavens for not having a 220 back, because I already have a 120 back pre-loaded. 220 costs twice as much, and cost twice as much to develop, Also, you can't use 220 in older cameras with the red hole for frame counts. The only real advantage of 220 is about 1-2 minutes of reload time, depending on how fast you are.
For the past 6 months, I've basically settled on Plus-X as my 120 film of choice. Even after shooting countless rolls of PX125, I'm still experimenting, whether it be new developers, or pushing and pulling. The advantage of shooting 120 is that I can experiment more easily.
Given the dire straights we all assume Kodak is in, I think investing in the machines to print 220 of any Black and White film seems a stretch. 220 for Portra I can see, because that falls into the realm of wedding photographers and studio folks.
Maybe I'm in the minority here, maybe not.