Sig is getting into the squonk market with the Fuchai. Only info I've seen is Sig's video below. Not a lot of details other than it is a single battery, will take 18650/20700/21700 and does 150 watts (insert laugh track here for Sig's usual wattage overstatement). I do like the position of the bottle and the ease of battery swapping. Based on Sig's past history, this is one I'll wait on for some quality reviews before considering.