I am a mostly press to one side person as I really think it does help keep the quilt together and I make mostly quilts that are used and thrown in the washer and dryier....and It does make nesting the seams together easier as you can feel they are locked before stitching...I have longarmed other peoples quilts who pressed opened seams and have had to repair the seam....but I think they used a too long stitch too....I don't do a lot of quilting for others...just a few.