As far as I know, yes you can convert them. I'm sure though that there is a fee which I don't know how much is it for your side and I prefer to avoid it.
Ya, I have just tried their calculation engine. From what I can see, I have to pay about 3% conversion fee. I can fully accept this fee. However, as far as I know, I will incur a different fee when making transaction. It seems familiar to you, please tell me how much I will pay when send as F&F?
I'm sorry but I don't know what fee you will pay by sending F&F in a different currency.
However, when I send PP funds this way, I don't get charged with a fee (in same default currency).