He was on the mailing list on Monday asking about how to mount the SD cards as mass storage via the OTG port, which would act to test both client mode OTG and the SD card connection. So far, nobody's been able to help him, so it'll take him a good few tens of minutes to fully test a PCB I reckon. After doing his day job, eating, fixing up the shop, and spending some time with his other half, I'd expect he could only test a couple of PCBs a night, if he's even doing them without waiting for help with his question which would speed things up so it might be worth him waiting.