As it happens I was going to take the Vapeage bottle plunge too a couple of days ago... pick up a dozen or so to try in my army of Grands. I couldn't log in to my Vapeage account though, it won't accept my password (yes, the right one). So maybe I'll call them Tuesday.
So maybe this even after finally trying the 6ml square bottle mod in some of my Mini 2.1's not long ago from the 2 dozen I've had laying around here for about 8 months. That effort failed miserably IMO. The soy bottles I have are too tight a fit for my liking when you have to lightly force them in between the batt and Reo then do a light "squonk" to slide the door back on. One failed the first day of use, started leaking bad. Might have been a defective bottle, the rest held up, but I went back the the stock bottles anyway that I have to refill 3-4 times a day. Just for S&G I also ought to try at least one 10A fuse mod since I bought 50 and half as many spade connectors to mod for it around 9 months ago. Maybe finally patina a door or three bought for that as well back then. Was new to Reos then, all of these were hyped paths at the time I never took to the end.