I briefly tried it, and it seems very cool I didnt understand everything, but if you can just type in a nostr pubkey or npub and it pulls out your events, that would be very usefull indeed. I guess it wasnt clear to me that this was aligned to nostr identities (if indeed it is).
Discussion
No unfortunately it has to be ed25519 keys because it leverages the massive 15 yrs old BitTorrent DHT, and it doesn't return events it returns a <1000 bytes compressed array of Resource Records
Think of how BlueSky use TXT records to map domain names to DIDs, well the same but the domain name is a publickey and the Resources Records are signed.
You can however (and I hope I get time to do it) fork a nostr client, so that it can return nostr events from a Pkarr key, if it had _nostr record, just like how clients support Nip05