Is there supposedly some drawing or other advantage for the tilt, other than comfort while seated? Civilian only, not concerned about police specific issues.
There is an advantage and even though not "police specific" certainly combat shooting, which is what hopefully you won't have to encounter. The cant is of little use in Bullseye shooting but is, for normal CCW use. ..
If you have had any training, what did the instructor teach?
Be Prepared and;
Be Safe !!!