I've finally got around to putting in an order for the nRF8001 bluetooth chip, so I will soon be able to test whether my PCB actually works or not! (I've never designed an RF layout before)
I should have it all soldered on in the next week or so.
I have also ordered an EFM32 devboard so I can start prototyping my next watch design, which will feature much lower power components and an e-ink display instead of OLED.
Interestingly, my OLED seems to have killed off a whole column of pixels, and they're stuck blue. ESD damage perhaps? Because I didn't stress the cable connection this time!