OK, I got the CA-14 from Chris Church yesterday (the deal was not so sweet as I had to pay custom tax) and did a brief test. I recorded two Slovakian punk bands from a VERY BAD spot as I was in the photopit - basically right at the stage but couldn't hear properly neither the stage speakers, neither the big venue speakers. But both were punk bands, I had the same position and roughly the overall conditions were very similar.
I did some very brief postprocessing (same in both cases - basically increasing the treble and lowering bass as the first versions of the recording sounded bad), here are the results and my opinion:
SP-CMC-8 cardioids + battery box (line-in input)Sample:
http://www.queenconcerts.com/tmp/mics/tesths.flac- overall more treble, slightly clearer sound, lack of bass
CA-14 cardioids (no battery box, directly mic input)Sample:
http://www.queenconcerts.com/tmp/mics/testik.flac- less clarity but more natural sound, more bass
I know this is a very amateur test and the results can't be compared but I think these mics are very similar in terms of overall performance. At the moment I'm not convinced which one is better but I'm definitely looking forward to taking my CA-14 to some proper concert where I'd be standing at the "sweet spot".