I have an aversion to French blue shirts except worn as casual, workshirts with jeans. It is a striking color, but chalk it up to overkill. It's nearly as ubiquitous as the lame guy with the untucked blue striped shirt with Khakis or relaxed fit jeans and black shoes. If you're a striking looking guy, you can wear the combination and look cool (use your objective assessment here.) If you are a regular guy, and especially if you are bordering on yuppie-dom, eschew the combination.
I have to agree with LA Guy here. Super-French blue shirts have been REALLY overdone in the past few years. Choose carefully. Don't go with too deep (dark) a blue, or one that is oversaturated or shiny.