2 of 3 are also not feeling as secure as I'd personally like as to rug you, one is kept in the app and the other on their server. I think nostr:npub1cvqlzvmjercdn0ypsmv8f7j9lge6ahsnueh5rparh53wuswftv4q49yjt3 did an article on this potential weakness a while back.

I like it for small change sub 1M sat wallets and do recommend it a lot to my friends who I know are looking for an alternative to Kraken and Bitstamp but I know they're not going to be holding much on there.

I was thinking more like using Bitkey as a signer like a tapsigner in another wallet in a 3/5 quorum.