I've never seen or heard of a problem with the Quad LCS leaking. All that I've seen have had Delphi systems.
With that said, my Quad does have a(factory installed) plastic drip pan that was originally fitted with a pig mat to soak up any coolant spills. I ended up removing the pig mat, as I was trying to get all the dust out of it and it was up before I removed it. One of the things on my "to do" list for a while has been to fit a replacement.
We get the mats free at work, as they are for padding on chemical shipments for their absorbent properties(they beat the heck out of the box full of vermiculate that the real nasties come in). I have a small horde of them in my office-I often use them as padding for when I'm working on a computer.