Yep, this is much how I feel about Aether as a whole, from what I've been reading!
Personally, I try and stick to realism as much as possible, because I not only find it to be occasionally an interesting challenge, but also something that can lead to danger or intrigue in roleplay. Walking off every battle due to abnormal regeneration rates would leave me feeling like I were yearning for consequences. Likewise, if someone doesn't care for my perspective, I can respect it, I simply will do as I find most fulfilling in roleplay.
I'd only ever use Aether as an absolute last resort, personally, but I similarly imagine class abilities to be fully accessible by players as it is in game. (There's a lot of grey areas, given, but I suppose I rather trust those I roleplay with to make a fair call on when to use or how to explain such!)