I haven't bought that many digital prints, but it does make sense that they wouldn't work well for a OBW if printed on various sizes of greige goods.
If go to the pictures section of the board, the first and only sticky is for the quilt gallery. It takes you to a page that has a "click here" and that takes you to page after page of quilt galleries. There are actually two galleries for OBW's.
Here is the first -
https://www.quiltingboard.com/member...bums16953.html
and here is the second -
https://www.quiltingboard.com/member...bums18127.html