Sadly they are an LN-wallet only in name. You can send&receive, but only via submarine swaps, it all happens on-chain. Nothing to it IMO if you know it, I have used Muun successfully for my purposes repeatedly.
Diversity is good, I guess. Wish they were more clear about the on-chain part. I hope they batch (at least some) transactions...
Yea but **why** do they use submarine swaps?
I'm gonna guess that it was the only way to make the wallet *non-custodial* - I think you can't share LN channels the way you can do on-chain addresses. Just my guess though, if you really want to know you could try to ask Muun. I've heard that they are pretty tight-lipped about the situation so YMMV
