I'd rather you go balls-to-wall crazy and buy a whole TF wardrobe.
You would go down in the annals of SF as a BADASS MOFO.
Maybe it depends on the suit. I'm pretty sure mine (which was probably from about three or four seasons ago) had more than just canvas in the shoulders. It was fully lined so not easy to be certain, but it felt like padding in there too. Spongy stuff.
It is completely made-to-measure...just about anything goes.
Ask Greg in the No Man Walks Alone thread if you have more questions...I am a mere customer. He runs the show.