I have done an extensive search on Google and none take Swiftpay. It may be of interest for you to know that Swiftpay is actually owned and run by sportsinteraction although they deny it.
The only internet sites I could find using swiftpay were a few in the porn industry.
It is also worth noting that Swiftpay has been the subject of an unusually large number of fraud attempts through bogus e-mails.