It worked great but from time to time, the rubber O ring on the CO2 would give out and I would lose all my CO2 as soon as I connected the bottle to it.
When it worked, it worked great but I got a little frustrated with it after a while. I was even able to refill the paintball canisters myself off my 20lb tank.
If you’re interested, I would be more than happy to sell you the regulator and the tanks (I think I have 3) and you could give it a shot. I rarely bring kegs anywhere anymore and when I do, I just bring a full 20 liter keg and a 20 lb CO2 tank. But I must admit, the 10 liter keg with that little regulator was great for parties.
Le Brasseur in Delson fills Soda Stream bottles. You must bring it frozen though or you need to leave it there and come back on the next day (he will put it in is own freezer). Cost is around 11-12$ + tx if my memory is good!