More like compliment. One of the main recommended ways to use whonix is within qubes
"complement" :-)
Unless it just has good things to say...
Indeed, Whonix "just works" in Qubes! Disposable Workstation VM without Javascript enabled makes a lot of the internet quite nice. Also, makes a lot of it literally unusable. Oh well.
It is like a dedicated version of Qubes with a browsing VM that uses a Tor VM as a proxy.