The chair can be used by anyone...although you will get the special proc effects if you are an Atrox or are fighting an Atrox.ooh the chair seems interesting... has a decent proc to it aswell too bad its nt only.
It is a LOAD of fun. I froze my Enforcer at lvl 12 to stay in the 'fun' range with that chair. I frequently log him on when people lvl 12ish want to pvp. In Subway I use him to level up friends and alts up to almost level 20. In the Workman Strikers room he absolutely massacres the mobs there...since they are Atrox He kills his target in 1-2 hits and the procs seem to fire with abnormal frequency.
FYI my first PVP kill was versus a FULL EXPANSION atrox soldier ^_^ - He thought I used some special PERK on him, until I told him I was a FROOB.
With that said I don't think it would be as effective at TL4-5