I am not sure...there are the Suarezes, but then there are also the Dr. Robertses and Vickerses and Rogerses...
I think that there is POTENTIAL merit to the MRDS setup.
What I am hearing is that the guys who are really benefiting the most are older guys whose vision is going.
That said, the benefit that I hear most about is not speed, it's accuracy on low-probability shots at a distance. At any rate I am not a convert but I think that there is the potential for improvement there. I think over the next 3-5 years we're going to see some developments in combining pistols and small, rugged optics that will push a lot of people in that direction.