I've found the poly blends to hold up very well. Why do you think it wouldn't? The poly blend solid I used for sashing on the first quilt I ever worked on held up to approximately 30 years of constant use (except during the summer, of course) without any sign of wear and tear. Probably would still be in use except the focus squares were embroidered and crayoned muslin state flower squares my mom and her sister had done in the 30s that finally just wore out. I had put it and the GFG we got as a wedding gift (which was also very worn around the edges) on a quilt stand for display in the 90s. All was ruined when our house burned in 2000.