The short answers is YES.
However, the latest version of Ajax4jsf (now named RichFaces) that supports JSF 1.1 is RichFaces 3.1.5. Today, RichFaces 3.1.6 will be released.
You still ask for 1.1.0. There are hundreds bugs has been fixed since that.
Thanks. I will try to integrate my project with 3.1.5.