Nope, I'm right handed and right eyed.
This technique was taught to me by an NRA certified instructor with whom I also shoot IDPA. My problem prior to trying this was that my sight picture was jumping all over the place when I held the pistol one handed, at full extension, perpendicular to the ground, and with my feet square to target. Combine that with a longish DA trigger pull and I had problems.
This canted hold, unlocked elbow, right foot forward stance felt odd at first, but (for me) it really helped.
I am also an NRA certified instructor (Basic Pistol, Personal Protection, Home Firearm Safety) and I've taught that canting technique to persons who are cross-dominant.