i have always flown with thumbs on top, it just happened the first time i touched a tx and i felt comfortable that way, people that tell you that either way is wrong or right need help , we all feel better doing things different ways, no way is the right way as long as YOU!!! feel comfortable with it..

they both have good and bad like everything else in life.....

same thing with modes that people fly, my first club decided to apply a rule (after being a member for 2 years) that you HAD to fly mode 2 to be a member, i fly mode 1 and always will no matter what stuck up club chaiman says, some people say mode 1 is old now and all pilots fly mode 2, ok fine but i fly mode 1 and feel comfortable with that end of story

EDIT...

after reading my post, the part about the mode's sounds like im ranting [], sorry about that, i understand some clubs have this rule (and i can understand why but it was the way this chaiman applied the rule that 60% of the members had problems with