I have made patchwork quilts with plaids dong something like alternating pieced nine patches made with solids or tone on tones with the larger plaid blocks. Turns out fine. I however, don't really mind where plaid lines end up to much. Don't have time for all the fussy cutting. Oh, and I also made a strip quilt with smaller plaids, a whole bunch of them, which my nephew loved and wore out, I think I made the strips to finish about 3 inches wide and just cut them into lengths and stitched end to end, sort of like a jelly roll race quilt.