I know that hanging has caught on in my district. Myself, and three other adult members of my District Committee are hangers, a fourth (my Boy Scout Activities Chair) will be joining us. It's spreading like wildfire through our summer camp programs. Many of the boys in many of my troops and packs are hangers. How many I couldn't say for certain.
As for the subject of alcohol stoves. The Guide to Safe Scouting states the following
"Prohibited chemical-fueled equipment—Equipment that is handcrafted, homemade, modified, or installed beyond the manufacturer’s stated design limitations or use. Examples include alcohol-burning “can” stoves, smudge pots, improperly installed heaters, and propane burners with their regulators removed."
I would take that to mean that any alcohol stove made from 're purposed' materials would be prohibited, regardless of who made it or where you bought it. I think any of our cottage made stoves would also be disqualified; such as all those made by mini-bull designs. Since these are essentially home made stoves. The only example of an alcohol stove I can think of that might be considered permitted in the scouting world would be the Trangia series of alcohol stoves. Of course, you would have to use it with the provided windscreen and pot stand as well, since that would have been the manufacturer's stated use.