Yeah, it's a bit more work with temperature control.. But I think it's very nice to be able to remove temperature as a variable when trying to reproduce beers. Being able to get the same temps (regardless of if they're high or low) removed some of the guesswork for me.. There's enough of that anyway! :D
Some lager yeasts supposedly perform very well even in higher temps (especially if you ferment under pressure!).
I should brew with some kveik again myself.. They're nice yeasts!
I don't know about the quality or how good they are, but IKEA has some portable induction stoves which seem like really good value.
I have a non-portable ikea stove which was very cheap and works just as expected.