Hey @Skot, have a look; GekkoScience just released a BM1397-based pod miner!
https://bitcointalk.org/index.php?topic=5423227.0

I'm trying to get my hands on one as soon as they're available to buy. I'd like to mine a bit on it, but would probably also be able to get some serial traces off it for our open-source project.
I'd much rather buy this than an old, used S17 which may even arrive broken.