Not at all!
I stupidly forgot the EF-RF adapter at home...
I had to lossily correct perspectives in Lightroom, hating myself for having to do so.
And I no longer own the 17mm TSE, its corners were not optimal for landscapes, especially when the lens needed some shifting. The 24 TSE is sharper, the coming (?) 14 TSE will certainly be even better. But $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
And NO, NO, NO, LR or DXO or Capture One are no real alternatives to TS lenses!
I do not think so. I have owned both the TS-E 17mm and TS-E 24mm (version 2) and have had the same as experience as @Del Paso: image quality fell apart (on my 5Ds R) when using more than a few millimeters of shift.