Mostly a model 23 Glock in belt slide Done Hume holster, spare magazine, Surefire Centurion C2, a Bussekin fixed blade, a Spyderco folder and a traditional slipjoint usually (SAK, Case, Queen, US Schrade). Keys, Blackberry (for work) and a lighter.

An alternative setup just replaces the Glock with a Kimber or Springfield 1911, usually in a Galco Fletch style holster.

Here is an under the shirt view of my primary side with the Glock setup.