Well, the whole book is NOT about mixing. I'm sorry if you misunderstood the book dscription:
This book explains the principles on room acoustics and basic working
techniques for sample-based orchestras.
Learn the basics of sound localization
and how to use this knowledge to place any instrument in a virtual room ā
independently of the music software used. Benefit from the detailed value
tables of an example orchestra seating
(American seating), and create realistic
panning and room depths instantly with your dedicated plug-ins.
It is not about mixining of digital orchestras, but how to use your plug ins for the
right serttings for creating depths etc.
It does not matter, which plug ins you use, as long they offer the required settings
as described in the book. Altiverb is a good plug in, but since it is a matter of
the right setting, it does not matter if it is named in the book or not (but it is actually in the Appendix).
Composing and mixing with orchestral samples is part of Volume 2.
Btw: there is more than only one reverb involved. Did you read the book properly? Maybe you did not
understand the content? :-/