This is starting to feel like a bad joke. From Robert's recommendations, http://www.boxenclosures.com/category/product_details.html?product__id=177464 looks best (lack of IR panel aside for the moment). But it says the cutout is for a 2x16 display at 1.79x0.7 inches. That seems to be much smaller than any 2x16 display I've seen, and might be a decent fit (but a bit short) for the 2x8 seeedstudio display.
Polycase has a few with an IR panel that look nice but I'd still be cutting the LCD opening. They have one with an LCD opening but no IR and it's more desktop than handheld.