Those chairs are like a royality for us "kings and queens". (Playing "God Saves the Queen (and King, too)"!
With Eric mentioning that there are arms on the chairs, it's a hit or miss with me. Maybe I will have to go to the mens room and act like "royality" and sit on the throne; I'll be KING FOR THE DAY!
Um...you've obviously never been to Union Station. The men's rooms are far from a royal experience. You'll likely not want to sit...even standing in one as briefly as possible will make you want to bathe in Purell®.
Just wait until you board (the CS originates there, so they'll theoretically be sparkly and new onboard).
On the other hand, the men's rooms have those cool dryers that use sheer windspeed, rather than heat, to dry your hands.