Totally depends on the look YOU want.
Sometimes grain (warp, weft, width, length, straight, bias, whatever) has to take a backseat to aesthetic choices.
I've fussy cut stripes because I wanted them to be going in only one direction in certain blocks; in others I've wanted a more wonky not-so-organized look so left them however they ended up being placed.
YOUR choice.
Last edited by MTS; 09-18-2012 at 03:44 PM.