There's a curiosity about the PayPal Top Up Visa card, the one offering AmEx top up payments earning BA Miles.
I had noticed that the card did not have raised account details, like a Visa Electron card. Lo and behold, a purchase today showed this on the receipt: 'Visa debit ELECTRON'.
If it is indeed in effect a Visa Electron card (though without the Electron branding on the card), it could be useful for purchases on FR, EI and EZ with no payment surcharge. It is simpler to obtain than a regular Visa Electron card.
Caveat: I haven't tried it yet with FR, EI or EZ.