While on demand works best with convection to minimize the thermal degradation of cannabinoids, the IQ2 (and other conduction as well as hybrid heater vapes) can still be used nicely on-demand. The suggestion of the Dynavap with an induction heater is similar (though the IQ2 has significantly better temperature control). Fwiw, anyone who enjoys a Dynavap vape should similarly enjoy other hybrid & conduction vapes. The IQ2 has a 45 second heat up, fast enough for most vapers to use quickly... and to maximize conduction / hybrid heater efficiency & enjoyment in on demand use, simply temp step each time the vape is used on-demand, and extract each temp selection well. More specifically, pack a bowl (small bowl for the OP), select a temp and do a couple of good puffs to extract the bowl well at the selected temperature. Then, when later vaping again on demand at a higher temp, only a small portion of the remaining cannabinoids will degrade in the subsequent fast heat up time since the previous lower temp cannabinoids have already been vaporized/ extracted. I also recommend only one or two temp steps, for a Dynavap fan like
@Rob90w, or anyone who enjoys full cannabis extractions, something like on demand first @ 320 F, then next time at @ 380 F and a final time at max temp (~ 440F). I only temp step once myself fwiw. Less temp stepping will preserve flavors better in both convection and conduction vaping too. And if someone can't extract a bowl well temp stepping on demand in draw or two, go with a smaller bowl / capsule next time... or don't even worry about it (a little cannabinoid loss from thermal degradation isn't the end of the world). Or go with a bigger bowl next time if one wants bigger hits.
I temp step & do on-demand vaping using both convection vapes at home as well as ultraportable hybrid / conduction vapes when out, all of them work great & get the job done well... and it's not a super massive difference when using a good quality vaporizer (along with the earlier tips on use).
On a related note, regardless of vaping style or type of vape, I always recommend vaping two or three smaller bowls over time instead of a single large bowl. It brings better flavors over the entire vaping experience, spreads the f/x out longer, etc.
Just my 2 cents for the thread & OP, hope it helps, cheers.