Keys are the same and all the data is on the relays. If you want to just test you can also just login with the public key. You cannot modify anything (like, reboost, write, follow etc) but you can view.

Iris allows you to take backups. Switching between clients may cause that your following list gets nuked but with restore you can get it back.

With #[6] and similar extensions it's easy to switch between clients on browser.

More info 👉 https://github.com/irislib/faq