<catchy rally phrase>
True, I don't know that I've seen a setup with just an external mic jack.
I have one of these... http://hoyttech.com/index.cfm?fuseaction=product.display&Product_ID=291
(found on craigslist for cheaper than retail, score!) It has the CCD bullet cam PLUS external mics. the trick is, both need their own 12v power source...but they have the external RCA jacks for sound.
the only problem I found with that is....if you record just from the external mics....the sound is fine....if you plug just the intercom in, the sound is fine....but when I used an RCA 'Y' to splice in the external sound with intercom....the signal on the powered mics drowned out the intercom, so I'm dealing with how to fix that.
brand new its a little pricey, but the camera w/the protective case is VERY rugged...I had it out side the car at Gorman last year....hit something pretty hard and the suction mount popped off....the thing bounced around for the rest of the rally on the side of the car and was fine.
FF to 3:30
(i called it wrong...oops)
that suction mount is usually really good, I think I just did a bad job of mounting it on the class (not cleaning properly).
Also, its a few years old...my camera is 480 lines of res, where the one in this kit looks like its 580.