As a past sales associate for both Home Depot and Lowe's in the flooring department it has always amazed me that someone would WANT to put laminate flooring on a set of stairs.
Unless you are using a nosing that clicks into the laminate (some do but $$$)the bullnosing fits up over the flooring. You are essentially making a trip hazard on each and every step. I hope no one visiting your home has a three year old that falls down the stairs because they tripped on the bullnosing going downstairs. Or an elderly person.
I have always recommended solid oak treads on stairs. They are both solid, beautiful, safe and probably less expensive than the laminate once you figure in what they charge for laminate bullnose.
You can do what you want of course but could you please explain the reasoning behind putting laminate flooring on stairs.