This publication lives up to its name, providing the same foundation for Calimshan as the Sword Coast Adventure’s Guide did for its respective region. Further, it provides the groundwork for an entire campaign, any piece of which could easily be woven into your own stories. However, this should not be confused for an adventure module; though it contains far more in this regard, versus the SCAG.
The quality is above-par compared to what I‘ve come to expect from official products, and at a considerably more reasonable price for a digital edition. As a relatively recent fan of the realms, I highly recommend this, and eagerly await comparable guides for Amn and Tethyr.
[5 of 5 Stars!]