Well, I wanted to check the fees to receive a payment in USD via swift so I did this:
bunq.com > Info > Pricing > Business > Fee Information Document
Then in the document it says "Receiving money ... In foreign currencies or ..." and prices on the right. I think it's reasonable to stop right there and assume that it just works.
Even if you know that the other document exists, you would have to do...
bunq.com > Legal > Pricing
...and then in that document you just get the same prices. There's no mention about the account being euro-only and that receiving payments in foreign currencies might result in a bounce that might incur fees elsewhere.