Thanks. We did take a look at them before, but unfortunately they appeared to have a few significant disadvantages for our situation (fees would have worked out very high, they seem to be very phone/app/online-centric in their access and security arrangements, missing some basic banking features).

I'm also not quite sure how they get around the anti-laundering rules that everyone else has to abide by. They mention checking various possible IDs, but what they say they need doesn't meet the standards that every other bank and financial service we've ever worked with would require, which makes me a bit suspicious about corner-cutting.