This is a great question and I'm also pondering the solutions.
I think the question only revolves around convenience. This seems to be the heart of the matter. When you're out and about by yourself and there is no schedule to meet there is nothing more convenient than a large format camera and all the trimmings. When you're doing snap-shots there is nothing like a quick and dirty digital. But when really need a film fix and you're expected somewhere in a couple of hours or your wife/family/weather say's you better get going, then I'm thinking Fuji GW690W II.
It'll give you a negative that you can hold onto. Only one lens needed. Can be carried on the shoulder and doesn't take 36 exposures before changing film.
I haven't done anything about it but just thinking.