OK, so I researched these HIVIZ Litewave sites and they are a number of poor reviews posted on Amazon. Mostly saying they don't let in nearly enough light, front site doesn't fit, and are made from low quality "soft' metal. HIVIZ customer service appears to be lacking as well. I'm surprised to read this since S&M elected them to put sites on the PC Shield. I was only interested in them because I assumed they must have been better quality then competitor sites if S&W is using them on stock pistols. I guess I'll keep looking.
750 rounds through mine... no issues with the sights... good with any kind of light... not so when it is dark... but I could not find one with the Trijicon night sights so the HI-VIZ Fiber Optic Sights will have to do. They are covered by the S&W warranty if anything goes wrong with them so I am not worried...