Do you think this trick work on board SQ flight?

[Lobster]

I hope they would downgrade you immediately to Y and feed you just bread and water for the whole flight. There should be no mercy shown to traitors.

[CGK]

I got this idea from a special someone. Soon, I will be on SQ C long haul. Once aboard, I plan to change to wear pajamas of Traitors Air. And when I have a chance, I will walk to the IFS, and says "I am sure SQ would prefer if I am wearing SQ pjs on SQ flight, right? Rather than this traitors air's one.
Do you think the IFS would give me SQ pajamas?