I've had it happen to me that judges won't even hand me the match slip if I ID.Â
In a sanctioned event? I find that hard to believe.
Some judges actually do that as a way of simply handling that quickly and without worrying about passing out the slip itself. Plus, it also "prevents" things like I described (holding on to the slip and then deciding to play when a match screws up the Top8).
Personally, this has not been my experience and I wouldn't consider doing this, as the players should still be handed the slip in order to complete it and sign it (this is as much a question of record keeping as it is propriety with all the results). And, certainly, this doesn't happen at the higher level events I've worked at.