This kind of discussion isn't derailment at all...The new Cloud EVO has TWO threads for people to talk about it in, both it's own Launch thread, for those with them in hand already, and an Anticipation thread for those waiting. Back to our regularly scheduled programming here!
Which means all of the above that you posted, is totally on topic!
I still think that you will get the best results by only having an ELB in the Cloud when hitting it, and following @
Anonymouse's advice, and stick the loaded (used or not) ELB in a small airtight container.
Simply turning down the temp wouldn't do much to keep it from passively vaping a bit as from my experience, you have to do a few dry pulls or a few hits to get it to actually drop temp. Once up to temp, the glass and insulation around it seem to hold temp until it's actually been off for a little while, or you've pulled air through the unit to cool it.
For stealth, I'd keep pre-ground meds in an airtight container, and some pre-packed ELBS in an airtight container. Keep the Cloud on, via WeMo, or otherwise, and have it in it's necessary spot, with moutpiece/HT, ABV container, pre-ground container, and ELBs (in container). This probably would be the best combo of smell proof/convenient/discrete. IMO.