Though this rule is global, you have to make modifications for each table that you want to force the ESS view. This one is on the sys_user_list. So in demo013, i gave Zan Sulikowski the user_admin role so he can see users (no ITIL). Without the rule, he see default view. With rule, he see ESS view.
In the comments of the rule it says: //To use on other tables, replace sys_user with the table name
So for change request table you would change to:
function change_requestGetViewName() {
function change_request_listGetViewName() {
change_requestGetViewName();
and you've limited non-ITIL to ESS view.
