This book goes over standard Czech, but even so, it's a great place to learn some spoken Czech. If you've used any other Colloquial texts, you know how the lessons are set-up. I have to admit, I do like the Colloquial series. There are only a few textbooks in the series that are not that great on their own (Mongolian, Danish, and Norwegian come to mind). But like most Colloquial textbooks, Colloquial Czech is presented in a clear concise manor and vocabulary is presented every step of the way. And there is a good amount of vocabulary.
Grammar is the focus of this first edition. Some people may be put off by this, but I think it is a good method to learn Czech. The newer editions are more focused on conversation, but as I understand it, the grammar is still covered quite well.
The audio for the conversations is spoken a bit fast, but this is a natural speaking speed for Czech, and one has to get used to it sooner or later. Granted, they could have slowed down the first few dialogues, but I don't think that diminishes much from the overall production.
Overall this is a great way to start learning Czech.