This was run on a focus for 7.5K. Overall, pretty solid with nothing to complain about. A little bit of wavy pleats by the seam but no tears or defects anywhere.
Looks good to me at 7500 mi. In my observation of MC anecdotes here, with the exception of an outlier, the 820S seems to be the one I'd avoid. Certainly no more than 5k miles. Topic 910S anecdotes, look similar to this.