Hi lhgdale, and welcome to the forum.
The R9 s has sights. While small and fixed, they are quite functional.
After reading through various posts here you will find some mixed reviews on reliability. But, we are talking about a crowd that expects perfection.
It seems the majority of problems are solved by proper cleaning/maintainence with either changing out the recoil spring every 100 rounds and /or switching over to the new "power" magazine springs as well.
Proper lubing tends to be more important in these guns than most.
And of course some guns tend to prefer certain ammo over others. My gun will take anything you give it.
From all what I have heard, the factory will do the right thing if something is wrong.
I'm sure I left something out, but some other members will fill in the blanks for me.
As far as a CCW - you are getting the most concealable power/firepower in the smallest, high - quality package available. You can't beat it ! At least at this time.
Hope this helps, and again, welcome to the forum.
Reinz