Joystick breakout module

Hi, i have a question about one of these
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?

Also the module is made by them:

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