My heart sinks every time someone tells me they always do a side-by-side setup with exact replicas of each page of their participant guide within their facilitator guide. So, I guess you know where I stand on whether or not this is a good idea.
Here are a few reasons why including the Participant Guide in your Facilitator Guide is not the best idea.
A facilitator guide will contain more text than a participant guide, in the form of instructional guidance for the facilitator. This is true even when compared to the most thorough participant guide. The sheer volume of facilitator guide content makes it impractical to have a side-by-side setup with the facilitator guide on one page and the participant guide on the facing page.
Notes & Images
A participant guide will contain plenty of capture space for note-taking, as well a larger renditions of images, charts, graphs, etc. Replicating large images and note capture space within a facilitator guide is a waste of space.
A facilitator who is using a facilitator guide can deliver the class without seeing an exact replica of the participant guide. Detailed guidance on flow and content is already in the facilitator guide.