I hope it's okay to jump right in - I've had Sweet Twilight for a while, and quite enjoy it. I also own the Fey deck, and find that ST is almost a 'dark mirror' for that deck. They live next to each other in my tarot space, so maybe they like to confer with each other?
Whatever the reason, these two decks have a certain synergy.
I've found the LWB is rather hit-or-miss. Sometimes I kind of make a face at what the LWB has to say - I never discard it completely, but it makes a sharp contrast for when the LWB goes perfectly on the dot for something.
I do wish it had a companion book like the Fey did, for I would love to see more in-depths meanings and reasonings behind them.
Now, to go peruse the individual card threads!