I've been using the Inov-8 X-Talon 212s for 6 months now as a trail running show for use in training across Salisbury Plain and as my race shoe for both Tough Mudder and Spartan series races. After researching before Tough Mudder in May 2012, I found several blogs and reviews from people who had run it before recommending either Inov-8s or Vibrams. When looking at the course structure, I decided to go for the X-Talon 212s as they seemed to have far superior grip and the majority of running would be through thick mud or wet grass fields.
|Parcels arriving at work like this are always welcome :-)|
|Talon 212s in thick mud during Tough Mudder|
|Talons anchoring me to the wet grass when helping Mark out of some water in Tough Guy|
The only negative is that they are awful on hard surfaces- even chalk or flint. If it's not soft ground, you really feel it through your feet. They're not designed for hard surfaces, so this shouldn't be a surprise. They also aren't very handy on the balance beam obstacles that you sometimes get, due to how high the rubber studs are as they can send you off balance easily.
All in all, they have been fantastic.