Saying Goodbye

I know I suggested it as a fall back to try both, but if budget is no object, I can actually see a reason to own both on an ongoing basis.........!!  The problem then becomes which one to take (unless you're definitely taking both.)

I think you're right on that one - I omitted AF in very low light from my list of things that mirrorless is not good at.

I too had travelled for many years before encountering any problems.  I learned the hard way that it can and does happen.  But it may never happen to you.  If it suits your MO to take a DSLR, and you enjoy it, keep doing what works.....

All I'm saying is that there are other great systems and lenses out there.  I wouldn't swing your decision on the retention of one lens unless its system is also what you really want.  It's the photographer that counts more than the gear. In other words, with sound gear,  you can safely buy into other systems and get great results.

FWIW, I don't own a Nikkor 24/1.4, but it wouldn't be my first preference for my interests despite the fact that I use the 24mm FOV a lot.  You've been using it on APSC where its sweet spot benefits the smaller format.  My reading suggests that its corner performance on FF is typical of fast WAs - not sharp in the corners until it's stopped down a bit.  Whether that matters or not probably depends on your interests and what you're shooting.  Personally I prefer slightly slower lenses with more even performance - eg Zeiss -  but then they're MF and I'm into landscape.

Me too, generally speaking - sensible policy.  I do confess to braking this on occasion.  Sometimes technology leaps ahead or prices fall and there's little merit in sticking with the existing kit.

Happy decision making.

Rod