When I was finally able to take a beginning quilting class - because I wanted to see some of the techniques in action, I had already developed a comfort level with double folding the fabric (selvage to selvage then selvage to fold) in order to cut - can do that with an 18 inch ruler and not have to move it. The teacher made a comment about my 12 x 18 cutting mat, and when I told her how I prefer, her response was that I wouldn't be able to cut multiple fabrics at once - but she was perfectly fine with me being okay with "that" problem. And she was flexible.
Because I had been working through A Quilter's Academy: Freshman Year by Harriet & Carrie Hargrave, and visiting here, I did have several differing opinions - which I mostly kept to myself - though there were probably one or two items that we discussed the merits of each idea. I worked to not be an obnoxious student.
Cheers, K