Well I will have to tell my Marker tech he is a chimip. Jason you are not completely off on the AT soled boots not releasing. Last spring I tore my MCL and destroyed my knee when my Scarpa Denali TT boots did not release from my new Duke bindings during a backcountry trip. The Marker tech contacted the company and they say that not all AT non DIN boots are compatible with the Duke. My advice is to take caution on this one and not end up in rehab for a year like I am.

Well, whoever told you this didn't set the binders up correctly. These binders have an adjustable toe height which should be set by a qualified tech who is familiar with AT BINDERS, not alpine binders. If you do not set toe height correctly, then it is possible to have issues with releasing. 90% of the time, this is due to some jackass who claims he knows how to set these binders up then does it the wrong way. I have three pairs of Dukes and have not had an issue with them yet. If you have a rockered sole on your boots (like some AT models such as the Spirit 4) then you need to be even more careful setting them up. All in all, they will work fine with ANY AT boot as long as you dont have a chimp setting them up.