The iP4 didn't coat the antennas, so touching them could short them, that was pretty serious.
First thing I did when I read the AnandTech statement was review how I held my phone - I manage to grab from top to bottom, so not sure here.
I've done RF on the job as well - exactly why I raised the questions here.
I don't know what to make of the active tuning thing.
Almost anything in proximity to an antenna changes it. That said, my other phones have been fine being held, the overall design ought to allow for that.
The first field reviews should prove quite interesting.
I'd like to say that no one can be that stupid in design but then again - iPhone 4.