Not sure what is bunching up everyone's undergarments here...
He didn't say this right away, so I can understand the mall-ninja assumption, but he has now made it clear that his issue is not a fear of getting caught in a shoot-out on the slopes, but poor storage options while out and about...
That seems like a pretty reasonable problem. It is one easily solved by going au natural for the duration, but you could make that argument for the other 364 days of the year too - many of us have walked around most of our lives without a side-arm... (YMMV, I know mine has
).
Now, I think as a practical matter, it is important to recognize the potential for impact while skiing and as such the added potential for injury and dare I say it "accidental discharge", but these are manageable issues to say the least (and with some exception, don't seem to be the issues upon which most dissenters are focusing).