FOV within the scout scope is considerably less in a standard receiver mounted scope. So they work great for multiple targets, moving targets, and fast pointing at short ranges, but when it comes to picking out targets at longer ranges, or precision shooting, that long eye relief hurts a lot. Some fellas will argue that the opportunity for parallax error is reduced because you've extended your eye relief, but in my experience, that all depends on the shooter and the scope design - I've had good and bad parallax sensitivities in both.
I have a couple Leupold scout scopes that I've used off and on over the last several years. They spend most of their time tucked in the safe rather than mounted on a rifle.
For close range work where the Scout set up makes sense, I've become a fan of open style red dot sights rather than scout scopes. Or even simply open sights.
But then again, I shoot effectively with both eyes open, and was raised on a technique to let the shortcomings of the human brain let me co-witness my crosshairs onto a target by focusing in my left eye, then switching to my right to make the shot.