After considering the possibilities, I decided to go ahead and make the quilt - and use the crooked-cut squares as-is. The results turned out fine:
|45" x 62" - quilted on the longarm ("Shells" groovy boards) - cotton batting|
|(doubleclick the pictures on this page to see a larger image)|
|(I really wish my camera caught colours better - the backing is just gorgeous!)|
And, because the "Shells" grooves aren't as dense/close together, it took very little time to complete the quilt. For this one, just under 3 hours (and that was with thread that kept breaking on me). Pretty good!