Yes my ego is my main vape - especially my new 650mah ego pass though battery. I love using it as a passthrough while it is charging ang then just unplugging to take it out that I hardly ever pick up my other ego's anymore.
With some juices I prefer my 5V 901 pass-through though.
And I still go into the office 2 or 3 days a week so since I work at a university and I do not want to be seen vaping I use my old rn4081 npros - they are so underpowered and so small that using straight pg, they put out so little vapor it is very easy to hide my vaping.
I also haxe a Bartleby touch box mod pass-through. It's great in so many ways, but I had Cybervex built me a touch because I felt it would be easier because of my arthritis not to fool with a button. The problem, which we did not consider is that being old, my skin is so dry that it is not a good conductor - so I have to use a medal thimble when vaping with it to get it to work.