Hey @Ryan,
Good question! I’m afraid that Event Tickets Plus does not support handling multiple currencies. If it did, however, that would be more likely to happen at the e-commerce level, for example, WooCommerce, Easy Digital Downloads, or whichever e-commerce plugin you are using with Event Tickets Plus.
While I am not totally familiar with how the client’s accounts are set up, they should be able to receive multiple currencies from the same PayPal account:
https://www.paypal.com/us/cgi-bin/webscr?cmd=p/sell/mc/mc_receive-outside
But again, I realize I may not have the full picture and I know that things are often set up a certain way for a good reason.
Cheers!
Geoff