CM Locker and other alternate lock screens are not an option that will work for me.

My phone is supplied by my employer. Encryption and a password or PIN are enforced. I installed CM Locker thinking I could replace the stock lockscreen with CM Locker -- nope -- I ended up with two lock screens. I enter my PIN on the stock lock screen ( With "Verizon Wireless" hiding the status icons I want to see ), and then I see the CM Locker lock screen.
I would love to "root" the phone, but that too is not an option -- If I root it I loose all access to my work email and calendar.