I hate screen protectors, but it feels so vulnerable when I'm not using a case. I think the longest I've gone caseless is three minutes. I'm really gentle about setting it down, and that gets annoying. Not that I slam it down with a case on; I'm just not so gentle with it.No screen protector or case.
I have never ever gotten an air bubble with the SGP screen protector. I have used some in the past that was all about air bubbles during and after the installation. The SGP can and will get air bubbles and or dirt in between while installing if you are not super careful, but you can always take the dirt out and squeeze the air bubbles out before completion and then you have a perfect install.No screen protection either....but 90% of my friends keep telling me I should buy one... They say the scrolling and the feeling is better....but I HATE the little air bubble that appear (and they appear...eventually...with frequent use)