Very random question about receiving payments in different currencies.

I have a membership site that is almost set to launch. My audience is largely UK based, however, I am in the USA.

By default, I am setting my prices in GBP (pounds), and that is how I plan to set up my PayPal subscription payments.

Will I run into any problems operating a business in the USA while accepting payments primarily by default in GBP? Or will PayPal kind of automatically convert that to USD for me?

I know when I pay for things – let's say something ships from Canada and is listed in CAD, Paypal usually automatically converts the price to USD for me as a buyer at least. Do they do the same thing for their sellers/business accounts? Anyone have any experience with this?