Also a client that is usable based on my testing of using an nsec with just one private relay. A powerful use case for local uses such as a friends / family relay, a church group relay, neighnorhood association relay, etc. Its really easy to switch between nsecs and is not plagued with issues other clients have of pulling notes from relays not actually listed in your relay list. You can actually boot the client with such an nsec on just the private relay, which no other client i have seen allows easily.