So now, pressing the home button (I assume that is the button you are referring to) wakes my phone up and allows me to read my notifications without unlocking the phone. Then I slide to unlock.
How do you press the home button to unlock without dismissing the notifications before you get a chance to read them? One press? Two presses? Multiple presses on the home button aren't exactly responsive and accurate.
Press it with a different finger?
Pick it up as it has raise wake?
Press the side button as it rests on the desk?
Those are the 3 best ways in iOS 10