Yeah I'm in low priority queue because I had to book it, but it's how I noticed.
Why does Low Priority Queue just prevent you from using the client entirely? It's called Low Priority Queue not Lockout Queue. Players should at least be able to check their runes, modify item sets, and do other client-related activities while in low priority, things that can be productive to pregame preparations. Just seems incredibly counter-intuitive to punish people with a low priority queue and null access to all other client features at the same time.