It's done, just ordered the 1DX. Just read the manual, many unexpected things and details, all of them positive with one exception, just as I had put an Eg-S in the 5D2 I wanted to put the equivalent Ec-S into the 1DX but it doesn't seem to be properly supported; what do other people use, one of the split-prism screens or just install the Ec-S and work around the supposed exposure issues?