with straight line stitching, (cross hatch?)you can use any decorative stitch you want. i have the janome with accufeed, and i have used lots of stitches, when i don't do the
free motion thing. it is jut something different to do.
the last one i did, that was a quilt as you go, i used the squiggly line stitch to join the folded over, into itself,sashing.(clear as mud?!)
what machine do you have?
and no, you can't go backward on a dec stitch, it would look icky! lol