Ha-ha! Cute. I can tell you that after 20+ years of quilting I have never thought to consider it a problem. I use what ever mat, scissors, rulers, cutters, etc. happen to be handy or I know to work best for the task. I mix and match and mix-up tools all the time. In fact, I don't worry about anything at all: just pray, play, have fun, sing, quilt, say a rosary, read, do nothing, do everything at once, whatever I'm in the mood for! Do not worry! Part of quilting (for me) is that it's relaxing and helps me to forget or deal with my worries.