I have one on mine and I love it. I have it mounted immediately in front of the MBUS, so just a few inches from my eye. Both-eyes-open shooting is flawless, and it zeroed perfectly on the 25m indoor range. I haven't been able to get to the 50m/100m outdoor range with it due to weather, but the dot at the center of the "T" reticle is much smaller than the 5MOA dot on my Tasco, so I should be good at those ranges too. The optic holds zero when switching between the red/green illumination, which makes sense if it's just changing LEDs in the optic as I assume. Overall, I am very happy with my purchase, especially since I got it here:
Bushnell 1x32 Trophy Riflescope with Red/Green T Dot 730132P B&H
for $20 less than Midway had it "on sale".