Sorry not yet. It’s still on my to-do list though
Did you try this in the end? I just got a crux with grx and have been considering the same thing
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I have a Specialized Crux with that same set up. In order to run it with my zipp303s (which are not compatible with Microspline) I run it with a HG 11-36 12-speed shimano cassette. It works excellent! You migth need to check your chain length, and you need to adjust the b-screw. That is it.