I tried to use TW to transfer from a client’s UK bank account that was in USD, to my US bank account also in USD. I couldn’t find a way to choose this in the estimator, so I contacted tech support. They replied that this was a scenario they didn’t cover. I continue to get regular wires between the accounts, costs $25 in Interbank and my place charges an additional $10. ):
TW support told me they just don’t support an account in another country that isn’t in that country’s native currency. Which seemed odd. This was about a year ago.