Last year when I got my Janome6600 I was playing around with some little quilts, and I used the decorative stitches on several quilts, and was very pleased with the results, even though they were not "quilt show quality". (I was improvising, and didn't always turn corners well, or have everything even, but the end results are fine if you blur your eyes :-) I'll attach some photos to show the results. I don't have a closeup of the last one, but I used the forget me not stitch around the Irish Chain, and it ends up looking like lace from a distance.
Split rail before decorative stitches-BORING
[ATTACH=CONFIG]29844[/ATTACH]
Split rail after decorative stitches in red and gold
[ATTACH=CONFIG]29845[/ATTACH]
forget me nots with spring leaves
[ATTACH=CONFIG]29846[/ATTACH]
Irish Chain with scrappy roses for Jade Rose
[ATTACH=CONFIG]29989[/ATTACH]