Cool! So he would have been short term help, during a slow period for business(so, a time of relative peace). Though not much older, he looks a lot worse than when Jason knew him before. Thinner, hair and beard unkempt, that sort of thing. 

Eroebus would tend toward the casual and irreverent, but is well disciplined and hops to work immediately when called. Away from the normal environment of battles and war camps, he probably had to be reminded occasionally that he wasn’t there to chat with the employees. But, he worked for a well respected mercenary company, and reputation alone made him useful to have around. 
He would sometimes call Jason “captain” out of habit, especially in response to a given command. 

How did Jason treat the guards he hired? And what sort of attitude did he have towards them?