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I tried to do some testing with a multisig a few months ago and it did not go well. As a result I haven't switched to multisig yet. Here is what I wanted to test:
  • Create a 2/3 multi-sig, but use 1 signing device from a friend, and the other 2 be my signing devices.
  • Be able to use software like Sparrow to sign a PSBT myself and then send it to the friend for them to sign in a situation where I lost one of my signing devices.
The idea being that I could use my friend's signing device as a recovery option if I lost 1 of my signing devices. Using all the technology that already exists we should be able to do all this over the internet.
Idk if the issue was they were on a Mac or what but we were never able to actually successfully sign a PSBT and broadcast it. I could do it locally when I tested with 3 signing devices, but when I would sign a PSBT and send it to them Sparrow had issues with signing it.