I like, but I do not love it because sometimes my rulers still slip. I used to use stick-on rubber circles on the corners, but they are fairly thick and I was cutting at an angle sometimes - under the ruler and getting an inaccurate cut. With anything that raises the ruler up off the cutting surface, it is essential that the blade be completely straight. Having failed that requirement more than a few times, I pulled all the rubbers off my rulers (leaving behind sticky glue to clean off) and now have Invisigrip on them, with the exception of some specialized templates from Shar (Quilting From the Heartland); she includes little felt circles and I use those because they are thin. She also has no lines on those templates so there is not the issue of covering up markings.