Just got back from the range. The Big Dot sights are great, makes it very easy to pick up the front sight. I had Meps sights, which I really like, but the Big Dot sure makes things easier, at least for eyes and for my wife as well (after all, it's "her" gun).
I tried to get the 24/7, but the rear tritium sight was never in stock (I waited for 2 months). So I just ordered the tritium Big Dot with the standard rear sight.
The PCR and the Big Dot fit just fine in my FIST Kydex IWB holster (made for G19).