This seems a bit heavy handed...
Wasn't meant to be, just meant it to be clear and to the point.
...just a question as to whether or not cross-eye shooters had sight systems they prefer
And like I said there is not one or more sight systems that cross eye dominant (CED) shooters prefer...unless we say "Good Ones". Cuz most shooters prefer sights that work for them personally and so are "good ones". Sights that can be seen at speed and for accurate shooting as well. They will be the same sights as non CED shooters use.
To shoot well as a CED shooter takes the same practice that other shooters go through. Just a slight difference in how the head is turned and possibly where the pistol is held in relation to the centerline of the body in any particular stance.
You don't need to shoot a pistol with the off hand to "fix" CED, well unless you want to shoot with the off hand, which is never a bad thing.
You don't have to cant the pistol inward, towards the strong eye, unless for some other reason ya want to.
Jeff Cooper was right handed and left eye dominant. When he shot he turned his head a bit to the right to bring the dominant eye more into play. He used a Weaver stance which also helps some. He shot pretty well.
If a person will be shooting competitive bullseye with a duelist stance some adaptations will definitely help. But I don't think the op meant that. I think he was asking about general plinking and self defense shooting.
One fella trains himself to shoot with the off eye...OK but that wasn't really needed.
Another trains himself to shoot with the weak hand...A good skill to develop but not needed as a "fix" in this case.
Another following the advice of a trainer,etc., etc.
Not handgun shooters not much of a problem at all, unless someone makes it one. Now for an archer...close one eye.
tipoc