I haven't given them a proper muddy test yet, Ive only been out twice when it was wet and must admit I didn't slip but I haven't been on any muddy slopes yet! The sole doesnt look particularly aggressive but I must admit so far I have been plesantly suprised! I'd say they are more of a light trail shoe I think I would go for some aggressive inov8's in serious mud!
yes you could look at the x-talon or baregrip, I haven't tried either though, I have mudclaws but they aren't minimalist
