I recently upgraded from a secure-cabinet to a good safe. Financially it was painful, but I appreciate the peace of mind (especially in today's climate where it is important to be beyond reproach).
I've been doing the same routine for years: All guns are locked in the cabinet (now safe), except for my carry gun. My carry gun gets put on when I get dressed in the morning and comes off when I go to bed at night. It sleeps in a lock-box.
Sir, i am surprised you lock the weapon up during the wee hours in case of a home invasion(or night-time prowler), but i'm guessing you keep the lockbox close?