i tried the marker dukes on my ep's and had the same problem as my naxo 21's, when i was dropping 15+ to switch it kicked me out of the toe peice everything else is pretty bomb proof, my only complaint is having to get out of the binding to go into walk mode, my naxo's walk better, but i can tell the marker is most likely be more durable, i wouldn't suggest it for a day hike, but for accessing terrain outside of the ski area boundary its a great choice, if i crank the dins up all the way i dont blow out of ether of them but you are risking your legs at that point. so all in all i'd say the duke is pretty bomb proof other then the switch landing issue. if anything else happens that surprises me i'll post it up.