Mixing Shimano and SRAM 11 speed drivetrain components

With the Shimano 9000 11 speed cassette and groupset having just been recently released, it raises the possibility of mixing and matching Shimano and SRAM 11 speed components.  Here's what seems to be working:

If this works, then there is no reason that SRAM 11 speed shifter and derailleur combo should not work with an 11 speed XTR cassette.

This is good news for those that prefer the Shimano trigger shifter ergonomics over the SRAM shifters or for those that want to run 11 speed gripshift on their Shimano 11 speed drivetrain.

What is a little frustrating is that there seems to be no real data or measurements on the Shimano 11 speed pull ratio and rear cluster gear spacing.  This should be easy enough to measure, but no one is doing so at the moment.

Related articles:

Using 10 speed chain on 9 speed drivetrain

Can you do it?

Shimano XTR Di2 M9050 11 speed rear derailleur

This has got to be one of the most expensive rear derailleurs you can hang off the back of your MTB (and part of the super expensive XTR Di2 group).

Shimano Deore XT RH (rear) 9 speed shifter

What's it weigh?

Shimano XTR RD-M980 10 speed rear derailleur

Weight: 180g for long cage (SGS) version.

Shimano Deore XT LH (front) 3 speed shifter

This is an older Deore XT front shifter without optical gear display - Shimano model number SL-M739.

Shimano XTR 11 speed rear derailleur - M9000

Quick facts: