The context is I'd be using them in a classroom. Imagine 25 students with 25 bands and 25 computing devices in a single room, trying to pair the band in their hand with their device, and not one of the other 24 devices in the room. And that's before we get into the reliability of bluetooth. Whereas a USB connection would just be: take it off your wrist, plug in to your computer, copy the data file. Much less room for problems and less time wasted debugging the technology.
Yes, it's niche, and quite different use case to most bands, but wanted to check if it's been done or though of before. Might have to end up designing my own (or have some students do it