It doesn't provide a lightning address (user@appname.com), unfortunately. That's the one feature it's missing. It just works with standard lightning invoices. But its combined ability to transact on both lightning and chain networks, and its seamless, transparent lightning node functionality makes it a great foundation wallet to base your funds out of. Combined with Minibits, or Speed Wallet if you don't care about NWC, it's a great option.

Of course, Speed Wallet also transacts on both lightning and on-chain, and it provides a lightning address, so that may be a more attractive option for Nostr users.

The only thing that bothers me about Speed Wallet is that it's 100% custodial, so you're relying entirely on the Speed Wallet company to responsibly hold your funds. With Breez it's self-custodial so you get a 12-word seed phrase that you can use to restore your wallet if necessary. No such thing with Speed. If something goes wrong, you have to email support and hope they do the right thing.