Are Fussy Cut Rulers worth having around? I can get a set of 3 that are 3.5, 4.5 and 6.5 for around $14.00. I have already done one fussy cut quilt and not knowing if I might do another one at some point I was thinking about getting them. The last quilt I did I didn't have them and just used a regular ruler but was a little awkward using a long ruler. Are they useful for other things other then fussy cutting?