I've only had the the toecaps slip once after 10 days on them, and I'm pretty sure it was my own fault from being careless and not putting them on properly. They work way better than I would've imagined, even on the smooth, rounded toebox of these NB x 686 boots.
17 Korua Apollo . 17 Nitro Treehugger . 17 Lib x Lost Mayhem Short Fat . 17 Jones Storm Chaser . 17 Ride Warpig . 16 Never Summer Swift
17 Burton Malavita Wing . 16 Burton Genesis X
16 Flow Talon