For sure! NIP-60 wallets could be the future. I think the main issue is going to be Apple policy. Olas is just TestFlight beta, but I have my suspicions that if they submit to the App Store it won't go through.
Discussion
what does not convince me yet is that I do not know about cashu yet...sounds like another protocol. And does not sound like your are actually holding your keys of it.
Which is alright for a easy experience and integration of new user in nostr so they can fully experience the zaps...but it does separate from the principles of "not your keys, not your..."
Any way I have homework to do.
Yup, exactly right. I think the hope is that it'll one day become pretty easy to be your own Cashu mint. One day.... But as you say it's good to get a feel for Nostr and learn about relays.