Shit, I guess the op did ask specifically about session vapes. Sorry if any of my convection talk was off topic. Even for sipping I'd rather have on demand convection and take hits of any size right when I want them.
Thats how I feel. No reason an on-demand vape CANT be used in a session setting. The difference, IMO, is a true "session" vape feels like a forced session. Where as you can still have a session with an on demand vape, but at your own pace.
Example: Watching a movie, want to vape... I have my conduction/session vape, my IQ2. 8 minute cut off. I end up feeling like I have to huff on it for 8 mins straight with minimal breaks between hits.
Same scenario, but with something on demand like a tiny might. Even though it has a session setting, I've only used it once. I could be watching a movie, pick up the device, never takes over 10 seconds to heat up, a hit, if I want another one, the follow up heat reaches temp a lot faster than the initial one, and if I dont want another one, I put it down and hit it in a little bit when I want to. It's still a "session" but it's on my own terms.
I mean I guess it extracts a lot quicker in a direct comparison, but I can also turn the temps down low and sip on it for a while...