Doc,
Thanks very much those links pretty much explained what the use for this 827 really is. If I understand what Tony Miller said it's not made to be a regular strop but rather a replacement for a pasted leather/linen and is used prior to using the smooth finished strop we all know so well.
This would also explain my poor results. Use this one first then the smooth for the finishing strokes.
For me I would prefer a linen then a Latigo smooth strop. I don't see the need for an extra step with the rough sided strop.