Personally I don't frown on it, I just prefer to limit what I vape. For example I'll want to leave this and vape it in the cera or the cloud etc. No need to add anything for that.
But say I was going on a road trip like the one I'm going on soon...I could mix it with ejuice, throw in an ecig like the one they sell and have a discreet stash with me and easy use. I love it for that.
Basically I just don't generally need the ejuice, but it'll be incredibly handy for stealth situations where a regular vape will stick out, but an e-cig style vape will fit in. Concerts, travel, leaving in the car out in the open etc. No one would look twice.
This changes everything for me. I was QWISO or bust before, but now with this product it eliminates all the issues I have with butane as a solvent. So incredibly well played IMO.