iviehoff, on 2012-May-04, 11:08, said:
Saying "having none, partner" is trying to prevent a (further) irregularity of a revoke being uncorrected. It is something that has from time to time been explicitly permitted, or explicitly prohibited. Under the present laws of it being explicitly permitted (with possible regional election otherwise), we may still be concerned about the UI which arises from why partner chose to ask at that moment. Many partners only ask when their count suggests what they see is "impossible".
This seems like another case where I must be the luckiest player around, or maybe just oblivious. My experience with people who ask this is that they're very consistent: they almost always ask the first time their partner shows out of each suit. The reason I DON'T ask is because I've never been able to get myself in the habit of doing it regularly, and I don't want to do it only in cases where I'm surprised.
Of course, there are some poor players who indicate surprise when partner shows out in other ways: facial expressions or exclamations. I hope I don't do this.