A portable wouldn't be as good as a full fledged desktop vape.
With the DBV there are no batteries, you can vape all day long.
Also I like collecting the resin and abv, which I'm sure a portable could build up resin but it's much easier/better to scrape off resin from the tubbing and glass piece.
It's been a year since I've had flower.
I miss the full spectrum of feelings that came with it, I miss the head sweats and smoking ABV after I'm all out.
Cartridges (of any sort) by comparison are so boring, but they get the job done.