Earlier quoted context omitted.
I want to use them; but they can't take $US without a US bank account (we have a $US UK based bank account) or do Amex yet. Hopefully soon.
Agreed, this is a massive pain - I'd love to start using them but I need to bill in USD, and getting a US bank account from the UK is a big unknown. I spoke to them at their hack day in London at the beginning of April, and they said they expected to solve this in 1-3 months. So hopefully within the next 6 weeks if we're optimistic!
Hopefully something as 'simple' as USD charges getting sent to my GBP account, taking a forex hit along the way. I'd rather that than the red tape of setting up a US account.