Blackeagle : yeah, that was discussed above, with the conclusion that it would make grabbing pretty lame unless other bonuses applied.
EDIT : ninjaed by a ninja... a robot zombie ninja. But one who makes a good remark indeed.
AFCErik : indeed, that is probably what they are aiming for. People moving all over the place in combat aim for the same feeling. Though I'm a bit confused that there's so little information about the DCs of such manoeuvres. They keep repeating that "the DM sets the DC", and that "the DM always may set a high DC for more difficult stuff"... But I am the DM, and I don't know what to do !
Oh well, I suppose it must be buried somewhere else, though that is surprising for such a well-organised book.