My wife has an incase slider and her screen protector is perfect. I had one on mine and it bubbled. And we both have the same screen protector too. Go figure. Hers must be a fraction of a millimeter different in position, making for a perfect fit.
You will have no problems with bubbling with the Casecrown Slider. The case rests on the metal band of the phone and does not make contact with the front glass.