not really about the MYOG part but since there's discussion about function...
Borrowing from the hiking, I prefer to use waterproof socks and let my shoes get wet. I use non-breathable, PU-nylon (silnylon would work too) socks with my regular, insulating socks inside. A much better seal, a much better fit and it's no problem to step down and walk, if necessary, which is one of the main issues with booties. Regular strategy about using quick drying shoes so it's not that big of a problem to let them get wet. A solid plastic bag works quite well too but it seems to always break eventually.
Nice item anyway, looks great.