This could appeal to some folks new to squonking, concerned about keeping the wicks wet, etc. I know when I first started squonking, I was worried it would be hard to 'learn' how and when to squonk. As mentioned above though, it quickly became second nature and I can vape without a dry hit and not realize I'm squeezing the bottle until it's empty, lol. Funny how that happens.
When I first started squonking, I bought some BF RDTAs figuring that would help out with not squonking when I needed to, etc. I actually have standard pins in those RDTAs currently and use them on non-squonk mods. I got used to squeezing the bottle without even thinking about it. I can understand how this new feature might be attractive to some, but it doesn't do much for me. It is nice to see someone trying to do something different though. I would have been perfectly fine with YiHi making a nice squonk mod without a feature like this.
Like was mentioned, come up with a non-leaking, serviceable 510 for us, a completely waterproof design or something like that. I would be on that in a heartbeat. Fix some of the problems with current designs and I'll get in line to purchase.
I saw this mod over the weekend when updating firmware on my SL Class, and was actually exicted to see they had a squonker in the works. Kind of turned off when I saw what the innovation was. Probably a good selling point for some folks, but it doesn't solve any problems I have with my current devices.