All speculation aside regarding high usage risking cancellation, the subject of this post is the 256kbps data roaming. Who here thinks T-Mobile will activate their "Black Ops" team for this? I personally think those on either the 128k, or 256kbps will draw a pass on the excess data 51% rule. I suppose if you never use data except while overseas it could happen, but who does that?
sau54,
You could just run up your data usage when you return to the US to balance out the overseas amount. Heck, I've ran some zippy speedtests that used over 1Gb in one test on 5G.