Yes we have used the Bitcoin Design work as a reference for a lot of the designs in Clams. I checked out what you all had for BOLT12 and async payments, but there wasn't a lot there that I could find at the time.

If you all have any feedback, or want to jam on it, let me know! I think there is a lot of improvements that need to be made to get the UX to a level that a person that is not familiar with Lightning can use BOLT12 easily. I am hoping that once it is widely supported, we can collapse the "receive" and BOLT12 payment flows in to one nice flow, but I hope that this is a good start to get people using it and we can go from there.