Fully adjustable rear sight for MP-95/MP-90

Is anyone here running the fully adjustable rear sight (notch height and width adjustable in addition to elevation and windage) on their guns? 

I have had issues with the width of my rear notch (particularly indoors) and I have ordered this new rear to see if I can get it to adjust wide enough for my eyes in indoor light situations. My existing rear notch was the smallest offered and the replacement was blade was not quite right either. 

If you've made this switch, how do you like it?

I've made a crude set for my 1911. I love it so far.