This is, in part, what I wanted and here it is =3

It didn't work on my end, getting a failed connection error, but happy that it exists and hope someone forks it and develops it further.

With this, I would finally have a single app on my other phone dedicated to just having my nostr addresses there and managing my connections to other clients (on other phones or PCs, apps/sites), and signing remotely.

nostr:note10r3fjahczfls0w6ezvjcndn6clmyygc3unns77smjk29xjz7dm9syc9ynh 

With that said, I remembered the Amber app, which is almost there, but it doesn't have NIP-46 yet, but has other things I want (multiple accounts for example). If Amber adds what Nostr Signer has, NIP-46, and QR scan / paste a client's connection link, then that's it, we are good! =3

All that would be left with Amber is a redesign and, when it's out, an implementation of this: 

nostr:note18ddm80y4v3wgr2g3z2zqm902wtpn5mus9r8aaql2c6l0kcqrqztspjqwym