I personally use a Gum Creek holster for a CZ-type pistol (SAR B6P).
I don't have the holster right in front of me I have it to the right of me. The Gum Creek will fit wherever you have a lip to fit it on, so if you have a compartment by the center of the vehicle like my car has, you can mount the holster more toward the center. I like the pistol to be to the right of me anyway.
The one thing you should check though is the distance between the two lips in any vehicle you're going to use it in. There is a minimum distance of probably 7 inches, might not be a problem with a truck but if you're driving a small car like a Honda Fit, Toyota Yaris or Chevy Aveo (something like that), the distance between the bottom lip under the dash and the top lip may be so short that it will be shorter than the holster itself, in which case the holster is just sort of hanging there.
The distance between the two lips in my vehicle is just a tad short but I tightened up the two two clips with an elastic band to keep the bottom clip from coming off.
I purchased the holster in a color that matches the interior of my vehicle somewhat, and I purchased some cloth that matches the interior, its actually a wash cloth. I lock up my firearm when I leave the vehicle, and I throw the wash cloth over the holster. You really can't tell what it is by looking in the window.
Just a note on training.
I set aside time every week to practice drawing from the holster while seated in the driver's seat and I'm surprised how difficult it is to actually draw, deactivate the safety and shoot. I start slow and repeat the motion over and over and I can't tell you how many times I've bumped the muzzle on the steering wheel or failed to flip the safety off before trying to pull the trigger. Especially turning to the left to practice dealing with an attack coming from the driver's side. For me personally it is a lot harder than drawing from a holster standing.
I should practice more.