Astrid: I know what you mean about investment socks! When you're used to paying a fiver for three, it's hard to credit what a difference a good pair makes. I have a few in my drawer which have long outlived the shoes I originally bought them for!
tulle, Cerinda: yeah, I know, right? I never would have thought of it, but as soon as you put it in, it seems so obvious! I'm amazed that this simple little trick seems too have fallen into obscurity.
Anyway. Shoes are on their maiden voyage right now, au naturel with Bridgedale hiking socks. I've hoofed around town a bit and they feel pretty nice I'll wear them in a bit before I figure out whether it's worth the time/effort/investment to adjust for slippage.