I kind of do the same - tho don't hold it for as long and usually with my Extreme Q for second vape.
Vape light (lower temps) on Q or with MFLB. Dump "green" ABV in to a dish. Later in the evening, when looking for something a little heavier and sleep inducing, re-vape at higher temps/slower draw. Leftover ABV from that still plenty good for edibles or whatever you usually do with it.
Especially nice if you have some things to do in early eve, but want to get wiped out later. Also a nice way to go if hiking, kayaking or whatever other outdoor activities and you carry an abv container. Vape all day as normal with lower temps - then revape at home after dinner. Revape works great with MFLB or Q.
I usually don't hold it for more than a day+ (36 hours tops), but it's always fine for second run.
Double the vaping from same stash? Sort of. Although not really, I get 2 good uses with the buzz I'm looking for from each. So, in a sense I get at least double from same stash! Can get a little lit up and keep my wits about me while out or doing something, and plenty of couch lock for later.