Hi all,
i runed a tournament after done 2 book and tested then.

Results are quite good.
You will find find the results of one finished and the second running book OFF and ON for some of them. i used "Stockfish +", "Raubfish" and "Stockfish PB 03012022" as host of these books.

Book war1 rank picture

Mutant82 & Omega82 book Book_w11

Book war1 pgn
https://pixeldrain.com/u/3p8kamAw

Book war2 rank picture

Mutant82 & Omega82 book Book_w12

https://pixeldrain.com/u/Zidfmr9r