> I don't think it is good for the UX when clients hard code links back to their own client. May be its ok there are so few nip34 specialised clients.

Yeah I agree it's not ideal but is a way to let people know about the client. Alternatively a `client` tag can be used.

> I really like the 'Open in' based on client recommendations from my WoT. There is a NIP for that right?

Yes, NIP-89, it's a great idea to create an app handler for gitworkshop with all the NIP-34 kinds. I'll open an issue for that.