The trial information is
here. The two big differences are the times that it applies, and how long. The threshholds aren't too different, but whatever time you get done it'll revert at eleven o'clock. What I have noticed is the timings for upload suggest you can get traffic managed for upload in just about 1.8 hours, so for the upstream window on weekdays it could kick in at 11:48 AM. Now, it says it'll get released at 23:00, with the maximum time being 10 hours, and since 11:48 is eleven hours and twelve minutes before then that would imply either that the penalty does wear off as it does currently or, and this is not outwith the bounds of possibility, they've done the maths wrong.*
*Or I have. The advantage of anonymity is the freedom to be wildly inaccurate.