Thank you all for your responses. I should have mentioned that I have tried all the grips and the grippy spray you mention and they all work to some degree. Some too much in fact, but I find that I still prefer the Omni Grid when I reach for one. I started out buying the cheaper brands thinking there could not be that much difference (a novice) then I bit the bullet and purchased my first Omni Grid, and that became my very favorite.
I really don't need more rulers. I know I can use a larger size square ruler as well to square a block up. I just love the convenience of having the perfect size square ruler to square up my blocks. (and my 80 yr. old eyes thank me) It just makes it faster and easier, and who doesn't like that? (except the pocket book)
