Yes, for example the use case I have is that I've found I need to have some sats aside for rebalancing my lightning channels sometimes. So where to keep those sats without them being on some non self custodial wallet? I could just hold them in on chain btc but the transaction cost and hassle of swapping into lightning each time I need some sats for my node isn't ideal. So.....I decided to swap a load of sats into liquid (used Boltz exchange) and then when I need sats on lightning I just swap back from liquid into lightning. It's faster and cheaper. Green wallet are coming out with the ability to have a lightning wallet as well as Liquid and on chain BTC, all self custodial. I've known about Liquid for quite a long time but only recently found a need for it and it's a fair enough solution for what I need.