I carry a Walther P99AS 9mm with an Alien Gear 2.0 IWB holster when I’m carrying concealed and a Fobus OWB paddle holster when I’m not carrying concealed. I owned a P99 Airsoft pistol in college and fell in love with the ergonomics. I shot a friend’s P99 a while back and couldn’t get over the build quality, accuracy and feel of the DA/SA setup.
I use the Alien Gear 2.0 holster for its fantastic ability to hide a pistol of that size with relatively light clothing on. I use the Fobus because it’s easy to take on and off, is extremely comfortable, and puts the pistol in a perfect position.
I also have a Surefire E2D Defender I carry that is super bright and indestructible!