There is no need to see it when looking down the sites. It is not visible at all. I own 2 SR9's, that says they are a good gun in my opinion right there. When my son graduated from college, got married and got his first house I got him a hand gun as a housewarming present. I got him the Stainless Ruger SR9, he had shot mine so often and so well it is what he asked for when I told him what he could have. He is a smart kid and has access to all my handguns to try. I did limit what I would spend to about 550 which ruled out some of the ones he has shot. He did not just go for the most expensive. He went for a very good gun at a very reasonable price. It looks good it shoots good, there are holsters made for it out there and you can for 30 bucks get a ghost trigger bar for it that makes it a super sweet much lighter pull if you so desire. Some don't desire it, I did it to one of mine. I have shot mine in USPSA and have no issues other then my own poor eyesight and lack of mobility.
If the only concern you have is the load indicator I dont see an issue at all. It is a fine weapon and if there is a hiccup Rugers customer service is top notch. My opinion .......buy it.