I had a set on my CZ PCR. I replaced them.
I'm faster and far more precise with standard sights.
While the sights were amazingly fast at close ranges, I realized I could be almost as accurate, and even faster not using sights at those ranges.
That said I fully intend to get a big dot front on my J-frame. I've held a snubby that had one, and it just worked somehow.
I must not fear. Fear is the mind-killer. Fear is the little-death that brings total obliteration. I will face my fear. I will permit it to pass over me and through me. And when it has gone past I will turn the inner eye to see its path. Where the fear has gone there will be nothing. Only I will remain.