Aloha!
I'm a bit of a dinosaur, I've been merrily using my Volcano for 10+ years as my main vaporizer at home (yet to try a ball vape, something I'm currently researching and hoping to fix this year!), and my only complaint with the Volcano is occasionally after a few bags the vapour irritates my lungs a bit with the dryness, causing me to cough and splutter, which slows down my medicating...
I saw this and thought it looked like a great idea, so i decided to give this a spin and I'm happy to report, it works like a charm with the easy valve bags.
I fill the bag as normal, then rather than attach the mouthpiece, attach the adapter, and then i put that into my big old Grace Glass bong. I found this made the vapour a bit smoother later in the session, and caused less irritation.
I'm sure this would work better in a smaller bubbler, but I don't have one, so I made do with the big Bertha!
I don't believe it affected the efficacy of the medication in either a positive or negative way. It just made it smoother to get it in!
If you're already a Volcano owner and you have a piece with a 14.4ml or 18.8ml joint, then it's a no brainer, it's a small outlay for really pleasing smoothness.
Would definitely recommend.