Any particular reason why you recommend the XT chain
@Oddjob? Not intending to hijack the thread, just curious, as I've read somewhere that it's highly desirable to run XTR chains on Shimano 12-speed as they're much more durable - something about XTR having SIL-TEC surface treatment on the rollers plus the inner and outer plates while XT only has it on the outer plates.
From my own experience with the SRAM requivalent GX vs X01 Eagle chains, I won't buy another GX chain again. It's amazing how much faster they elongate vs the X01 spec.