Most of them use ETH as their currency, but even if they have their own token once exchanges have direct withdrawls to them, and they have most apps, they'll fe

Most of them use ETH as their currency, but even if they have their own token once exchanges have direct withdrawls to them, and they have most apps, they'll feel the same as using any other L1. We're still very much in the early days of this though, having to move between chains manually. There are bridges that allow executing contracts on other networks, and eventually apps will abstract the different layers away from users using technology like this.