Thanks for sharing that. In the case of Robosats you do a P2P swap of Lightning BTC to on chain with another party. It’s for example to move funds between your Lightning wallet when you buy Bitcoin from someone and then to swap it to move it to a hardware wallet. Does incur traders fee and a swap fee based on the order.

I think Muun does it themselves and I also heard they’ve had issues because of the high mempool fees because of the way they function.