Yeah I just bought a M11X and having the same problem of finding a case just bought a Vanguard VGP-13S the dimmensions look good (measured the radio and box that it came in) $45 at amazon but almost out of stock but other camera stores sell it, I even saw it on sears for $50. Let you know when I get it if it works. Has diced foam according to asome reviews so I should be able to make something nice.
http://www.sears.com/shc/s/p_10153_1...=1296398495292 or
http://www.amazon.com/Vanguard-VGP-1...6399270&sr=8-1