I think that it is very much possible that they can have personalities.
They're solitary creatures and likely keep it to themselves, in my opinion.
Someone I know has a pinstripe BP that doesn't strike her f/t food. Instead, she slithers around it and wraps around it. Without biting. She bites when it's a pre-killed rat, though.
I always thought that snakes strike before they wrap their food... I guess it varies.