I like it opaul!! Along the lines of what Von Gruff said. There is the opportunity to make a craftsman move. If you are good at eye balling things you can dress down the sewn edge of the sheath on the grinder, so that the stitch line runs parallel to the groove! Re-burnish and re-dye and no one know you didn't plan it that way!!
What he saying about gluing first and burnishing, is the easiest way to keep the groover parallel to the stitch line!