These are all nice shots but so far I don't see the benefit of the 5DSr in any of these. (...)
uhh..... I am shooting with a 1DsmkIII body, so not taking any benefits from the 5DSr
seriously now - it's about shot samples with the lens. For all that matters, it could be mounted on a Sony or even Nikon body.
I tried a mk1 rental before, and was not impressed at all. I still need to do an AFMA, if nothing else to confirm /check if indeed needs it, but the lens is more versatile than I ever though - the MFD is indeed an improvement, and for sure I am taking full benefit from the IS