I haven’t used it much. I run my own node so I don’t really have any need for their services.
I’m fairly neutral on it as a product. It’s very convenient and easy to use, but it’s also a progressive web app (PWA) and therefore the developers can push any update to it at any time without your knowledge. It’s definitely not fully “trustless” from my understanding, but it is a self-custodial hot wallet which supports lightning and is easy to use.
If you don’t want to bother running a full lightning node (which is fine), I think it’s a good option to check out. Just be sure to stay aware of how it functions and treat it like a checking account. Lightning wallets are by nature less secure than cold storage. I think it has great Nostr compatibility too!