They actually have signs up asking you to please unlock your checked luggage, but didn't look at it when we handed it over to them Thursday evening.
The security lines were very fast then, and there was nobody at all in the Business/Premier/whatever check in, so it was less then five minutes from walking in the door to getting to the other side of security.
Of course, on the way back Wednesday after the storm the lines were considerably as we were waiting for the parking lot shuttle, and an hour would probably not have even gotten you to the check in counter.
I would stick with their suggestion of two hours, even if you spend 1 hour and 55 minutes at the gate.