Another reason to want to remain with SOG while PP ... some prints will be just awful if you slap-dash cut just any old way. Stripes going every which way on a block would drive me insane!!
If not for the print ... I personally don't worry about SOG on PP blocks, even large blocks. The reason is that I keep the paper on and then join the blocks. If the block is such that leaving the paper on makes joining the blocks a nightmare, then I'll baste the outside edge of the block to the paper along the seam line, then remove the paper, then join the pieces.