To answer your question… “yes” but also possibly “no”
It all really depends on what you are attempting to use fog for in conjunction with WDS and how your network is segmented.
Long story short, in plain terms you can have only one DHCP server that controls or “points” to PXE that must be either FOG or WDS, not both.
You could use WDS for imaging and the fog client for software management, inventory, etc.
Or the reverse could be true and have WDS (if there is a client for it) do the management and image with fog.
Hope this answers your questions for you.