I did hear that it was rolled out with Bitkey! It's very cool. It seems like a pretty nice improvement to multisig wallets. Have you heard of any other wallets that have added it to their roadmap?

Also congratulations on the work! 

Scoresby

bitcoin

Bitkey's chaincode delegation BIP is pretty cool!

hi! thank you for writing this post. I'm one of the authors of the BIP proposal. apologies for discovering this post late, but I will be happy to answer any questions anyone has on the protocol. 

in case you haven't learned, this feature has now been rolled out and available to all customers to upgrade!