There must be a few who use a level 1 charger on their EVs. But I’d be surprised if there were many.
My EV came with the usual portable charger that could work at level 1 or 2. I’ve only used for level 2. I always thought of level 2 charging as essential to have at home.
Ya, those things are really only worthwhile as an emergency solution. If one is fortunate to find a 30-40 amp outlet, you are in pretty good shape, otherwise you are sitting put for awhile and letting your car sip on some juice.
It might make the difference in a bad situation, but you certainly can’t count on it for regular usage.
I used mine once or twice while getting my wall charger up and running. Fortunately, my landlord had installed a 40amp outlet in his workshop for his EV. I got to plug in there with my little charging kit.
There is no replacement for having a dedicated 60amp line so you can get a full 48amp charge, however. That is the max the Tesla Wall Charger supports, at least. With that, my usual top up is about 60-90 minutes.