Thanks @mimo and @Munky
Fortunately I packed a travel size (only one shoebox) shoe care kit to keep with me these next two years. I'll use this as an excuse to up my polishing regimen a bit.
But I must say, I'm surprised at how many people I've seen wearing Converse Chuck Taylors. It's like the 1990's are back, in all their grungy, arch-support-lacking glory.