Ah. I misread your “on” as “or”.

There’s an LSP spec under development that would provide a means of standardization and interoperability. Meanwhile, I can’t imagine nostr:npub1xnf02f60r9v0e5kty33a404dm79zr7z2eepyrk5gsq3m7pwvsz2sazlpr5 and nostr:npub1mutnyacc9uc4t5mmxvpprwsauj5p2qxq95v4a9j0jxl8wnkfvuyque23vg respective LSPs are interchangeable.

What’s your reasoning or use case?