Probably a good idea to ask your lawyer if they would be comfortable arguing that you're engaged in weather-spotting while indoors eating an omelet. Sounds like one of those cases where it all boils down to how confident your lawyer is.
...but whatever. Concealed is concealed
@ScottDLS covered it effectively.
The 46.15 non-applicability is for both 46.02 UCW and 46.03 Prohibited Places, which now makes the .15 element if being engaged in providing emergency services more understandable for me.
For example let’s say I’m a volunteer and responding to a polling place that’s been demolished by a tornado. I don’t have to disarm in order to enter the polling place to rescue people.