Joystick breakout module

Hi, i have a question about one of these http://newarduino.com/shop/shield_and_breakout/joystick_breakout_module/
and i thought that someone here might be able to help.

I want to cut the corners off. Can i safely assume that all circuitry is on the surface and visible? Theres no chance of cutting through anything important is there?

Maybe you're better of with this?

http://iteadstudio.com/store/index.php?main_page=product_info&cPath=10_15&products_id=120

Also the module is made by them:

http://iteadstudio.com/store/index.php?main_page=product_info&cPath=18&products_id=435

Also I find the site you linked to a bit strange, personaly I wouldn't shop there.