Very interesting indeed that when it comes to assessing a person's ability to operate a complex machine under challenging conditions clothing should be the number one concern ... just wondering where that leaves my instructor's favourite adage "Always let logic dictate".
"Seats, Belts, Suit & Tie - ADJUSTED, ON, ON" should be on the emergency checklists.
Asking that question about the dress code under the circumstances is perfectly fine, the fact that the latter is of any relevance in an interview or assessment in the 21st century isn't at all.