I have limited experience of this but i did go to work today after 4 months off & i took a sigelei No20 mech in 18500 mode with a smoktech mini dripper, 2x 10ml bottles & a spare batt, all in a hard sunglasses case. Tea breaks were nice !
Last time i was doing the same job i was a smoker & this beats it hands down.
So far I only have two ego batteries. I take both with me when I go out. One has a basic starter clearo on and the other has my iclear30 on it. My friend was a bit wide eyed over that the other day on its maiden voyage (she's a non-smoker who's only seen the basic starter style vape gear before).
When I do finally get a new shinier kit (hinting daily for a Vamo for my birthday from the ball and chain, but that's months away ) I haven't decided whether it will be for the house only or whether I'll take it out and about. I may do as others do and just stick to the starter kits just in case I lose or break it. But the temptation may prove too strong...