Its probably possible, the ladder aperture doesnt really need to be so high for most shooting however. Consequently, having the large diameter aperture disk requires setting it pretty low on the ladder which doesnt leave much room for additional apertures/notch below.
Also, to increase the height of the hinge area with a blade (which wouldnt be elevation adjustable) would add quite a bit to the machining process and the cost would increase accordingly.
Liken the feedback however...
Erik, I have the sight packaged, will send it over to you for a bit of hands on evaluation.