Is it needed for your use case in a shared hosting environment setting? Are you a reseller?
It's funny, because I've never needed the feature on my 3 CWP servers. But then again, I'm not a reseller -- I'm the "sole proprieter" of the servers I manage, doing almost all of the management duties myself. And likewise, I have no use for CWP's secure kernel because there's a level of trust between the clients on the one shared server and the other servers are 1:1 single domains to a single VM running CWP Pro.