It helps, can't complain about the additional shots either. Oh and there is weather proof ness. I've gotten the 5D plenty wet before in the rainforest at the dipping hole. Had it fogged up real nice, could not even read the top LCD for a few days. Dried it out, all is well. Sensor is a PITA to clean but that's the case with larger sensors. In a predominately marine environment it's easy to separate the good from bad when it comes to gear holding up.
The LCD on mine is scratched too from carrying a small arc flashlight on my dog tag chain. Never thought about it, brought the camera along at a pool party and everyone went in with clothes on! I was wearing a nice evening gown too! Luckily I sat the camera down on a table. Yet another reason why I DON'T want video on my still cameras. (they would not be going with me to the dipping hole!)