Glad to hear that solution is viable. If you're not familiar with the concept already: You can use "sight black" to eliminate any glare that might be caused by the newly-exposed steel on the circumference of the aperture. The field-expedient version is to simply coat the white steel with soot from a lighter flame. Temporary, but it works like a damn!
I'm going to try to fit a standard A2 aperture to mine when they arrive. God only knows what that will do to the elevation of the POI, though, so some different height front sight posts might be in my future, as well...