I'll chime in here that the footbox closes differently based on what insulation, and how much is used. Because Climashield is less compressible than down, it's harder to cinch the cord down all the way (esp. for the thicker options, like 30° and 20°). Down quilts close more easily since the down compresses better, so usually even with a 10° or 0° it's tight enough for me that I can't feel any air coming through. Still, as mentioned, tucking a spare pair of dry socks in there works well too if you're bringing them anyway.
As for the stripes, I'll just say that the 10D, while offering some water resistance, definitely will create a wicking action pretty quickly if pressure is applied, so if you're bumping into your tent walls and picking up condensation, the stripes or just a 20D outer will probably be a safer bet for you. Still not fully waterproof of course, but it handles the moisture noticeably better.