Awesome! Yeah, I haven't used west-sans-Zephyr yet but interestingly enough NXP decided to use it for their MCUXpresso framework: https://github.com/nxp-mcuxpresso/mcuxsdk-manifests/blob/mai...

I have mixed feelings about west in general, but I like it enough that I'd probably look at doing something like that in the future too for harmony-sake with our existing Zephyr projects.