Nip-26 and 46 ate different approaches for the same basic problem: posting without secret key, but they are quite different.

One nice thing though is combining the teo for creating the delegation: connect with your signer app, 2nd client asks for delegation, in 1st app you set terms (expiry) and approve, and suddenly your 2nd app has delegation for a period!

Using this with short periods is convenient, you need your keys only once, and you risk only a short period (in case 2nd ID gets compromised).

I plan do implement this flow next in Keystr.