cybrguy
Putin is a War Criminal
So, I have been thinking a little about this and I have a couple thoughts (I guess that makes sense...)
If the DV IH uses a switch like @Pipes one could conceivably put pressure on the switch with your lips, release the pressure and take your hit, rinse and repeat. This would allow you to stealthily take hits and look like you are drinking.
But here is the problem. You are drawing the air for your hit from inside the IH mechanism, and if you are going to do that than much more consideration must be given to the safety of the air path and potential toxicity from the source of your air. When your IH is just the heat source and ambient air is your air source this is not a concern, but drawing your air from inside the device is something else. You are also creating significant heat in the receiving tube for the DV itself, so the materials in that tube also need consideration.
I'm not saying these potential problems can't be addressed, I am just pointing out some things that would need to be considered to use the DV IH as a stealth drinking cup rather than just a heat source.
