Yes..I like my Olfa! I can lock it in ready mode or lock it in closed mode. I don't usually have a problem with cutting a straight line as long as I use a ruler. Most of my cuts have been vertical (away from me) but if I have a small surface to cut on, I will also cut horizontally. I do know it's hard to see where you're cutting when you have the cutter on the far side of the ruler, but I make sure that it's snug against it before cutting.