I have them on an SP-01. I like the deep notch. The .95 front fiber optic front sight allows plenty of light on both sides for fast acquisition just like the website notes. I have a 1.00 fiber optic front sight from Dawson's paired with the 1.25 rear notch on another gun that I also like. It shows up just a little better, but still has plenty of light on the side.
I much prefer fiber optic front sights over the factory white dots just because they show up better. If the gun is only for range use and you can take all the time you want to perfect your sight picture, it may not be as important to you.