I have made and tested a few and they never impressed me much for the style of backpacking i do. They work but when you add altitude and wind to the mix they fall short of how my white gas/multi-fuel stoves perform. I do like the idea of an alcohol stove because in one bottle you have fuel, something to clean wounds with, a disinfectant and if you use Everclear something to drink if you wanted.
They are cheap and easy to put together so why not make a few and see how you like them.