I wonder why there is no adapter for the 110 g butane canister: a folding three-legged wire frame to replace the backpack canister as a stove support and a flex tube to attach the cheap butane canister directly to the stove?
Do you mean something like this:
Three Legged Butane Adapter?
I find that it's easier (at least for me) to do the fiddling at home rather than fiddling with an adapter in the field. Also the adapter weighs more (78g) than many stoves (MSR MicroRocket, 73g), so weight wise it doesn't appeal to me. But that equation will be different for different folks.
However, if one were out on a long distance hike, carrying the adapter would mean that
one could use either type of fuel, which might be an advantage. I've seen the butane canisters in a lot of grocery stores, stores that I've never seen a BP'ing type canister in.
HJ