Re: got a problem whit prescription glasses
The purpose of those types of glasses is to align your lens so that a) you are looking through the optical center, assuming the lens is cut with the optical center in the physical center, and b) to have the lens positioned 90 degrees to the light path, both a and b while in your shooting position, with no compromise to your shooting position to accommodate the use of glasses, rather the other way around, the glasses accommodating the shooter.
So yea, I like them real well when used for their intended purpose. Note that they are intended to be used with iron sights, where the aforementioned points are much more critical than when using an optical sight.
Canuck, get some Decot Hi-Wyds, have them positioned high on yoru face, then remove the firing eye lens if it is still in your way. The frames will be out of the way of the scope on the Hi-Wyds if correctly adjusted.