I've had quite a bit of experience with A: a character who had no idea he had 107 cardamine and 107 corsairs, and B: a guy who outright and constantly denys he has any synth.
Both are the same guy, and both are my character. I've discovered a few things: BPA are willing to give a character the benifit of the doubt, while the RM are willing to RP that their scanners cannot be flawed...even if they might be...and they pull it off pretty well. I avoid liberty all I can, because I consider it a cesspit, and Kusari cause I've a bowex trader...but everywhere else, people tend to play along...and if they dont, you can always run away screaming that they're an insane triggerhappy madman just trying to kill you...and then hire mercs for defense.
If people dont RP with me, I'm always tempted to bounty them.