I've just been informed both by o2 and 3 that they do not support Pay as You Go (or contract) Data Roaming for iPads. So if abroad and you need to access the internet for flight planning, and no WiFi is available, what do you do?

Buying separate SIMs for each country does not seem to be a viable solution either.

I realise this is an Apple not SD problem but it does seriously inhibit the use of SD on the iPad for touring abraod.