Personal experience - Few years back went to open an account at a bank BOB, India. In the morning I was in tshirt and jeans and everyone was too busy to help me. Just 3 hours later went in a black formals and I didn't even need to ask them for help. And I've had such experiences quite a few times.
I was worried about the same thing when I bought my point and shoot. But I used it like one use his cellphone. And the other thing is for a long time I wanted to hack new gadget like leap motion.