well, yes you should perform an MSA on the system. This is a common dilemma for manufacturing - measuring systems are 'sold' based on their accuracy. the more techologically advanced, the more hype regarding their ability. Frequently these systems are appropriate and properly ddeployed, so an MSA merely confirms this. But too often these systems are not propely deployed and they fail an MSA. there is no way to predict the capability of a system without data. So yes, if the measurement is critical to ensure quality of your product then you should perfrom an MSA.
why would you consider not performing the analysis?