That is what I was thinking of doing but with exception it would just be a EU wide one ongoing monthly as otherwise I would be switching back and forth between them and trying to manage multiple ones. The catch being of course the fact I don't know ...
I have been with Smarty since May and usually travel 2-3 times per month mainly to Germany, Portugal and Spain. I can say that experience with Smarty on roaming has not been great, which is how I ended up on this discussion as I was searching option...