Recently ordered a HHKB JP Type-S to use with my iPad mostly, but would have been interested in a Bluetooth version if it was available at the time. However that bump out pretty much cancels out my interest in it. I don't know if that makes me someone with high aesthetic standards or just a shallow, superficial chump, because 3-month battery life sounds really good to me.
Let's see, if I purchase a 48-pack of Amazon Basics AAs for $12, that could theoretically provide me 6 years of power. OK, closer to 4-5 years since power capacity goes down over time during storage, but still, that's pretty good.