OK...I'm gonna give you a little different take on this and I hope it does not come off sounding insensitive. Maybe if I had Dale's condition I would give the same advice that he did, i.e. "the Sam of old is gone...". But, if you are 6 months out and "feeling fine" as you say, there is no reason that people should treat you any differently unless you are ACTING differently.
Yes, you are a cancer survivor but you need to reflect on how YOU are acting/reacting re the cancer, whether YOU are feeling sorry for yourself and whether or not YOU are acting like a "new Sam" or or relating and performing like you always did.
After my diagnosis I found it was easy to accept sympathy from people about my condition. However, as time went on and especially post treatment, I discovered that if I dwelled on that sympathy people would treat me differently. I didn't like that. I have found that if I respond in an honest, matter of fact way, I don't get treated any differently than before. When someone asks, "How are you feeling?", my response is truthfully, "Fine, everything is ok". Then we usually go on to talk about something else...unless the individual wants PCa info in which case I am happy to discuss and help them infinitely but without seeming to be a victim myself.
I guess what I'm trying to say is that if you don't act in a strange way then 99% of people will not treat you any differently than they treated you before. At least that has been my experience. So, if you are really "feeling fine" then just act like it, don't dwell on your misfortune and don't act like a victim...you are a survivor, not a victim.