I tried the tool-less method on my wheel (Alex double wall + Marahton) and had no success. Moving the tire to the center of the rim does not help much as the bottom of the rim's well is almost flat. I also tried to use levers at the last step (after moving the tire to the center) but it was just as difficult as usual.
Either I need to work on my technique or this is a tough wheel/tire combination. I may take my wheel to a LBS and ask them to take the tire off. If they will do it easily then I need to keep practicing.
Jur, please let me know when you will have the next tire removal workshop in my area. ;-)
Kam