my favorite company is only BURTON so thats where i do all my research in.
Last yr when i bought my custom x i was kinda sceptical about the ICS, i was thinkin the same thing whether its secure, it wont loosen up etc etc.
after a yr of riding the custom, the screws never came loose nor did the bindings slip. I love the ics because u feel the board more since ur lower to the ground as opposed to the traditional 3 hole set up. As long as u put some meet behind the torque then you will be fine. If youre lookin for an all mountain free style board then the custom is a wise decision.
The CO2's r awesome bindings, thats what i ride.
the one thing u gotta know is that once u get the ICS then ur only limited to BURTON BINDINGS ONLY.