What rt2 said, I have seen the Darton does see less wear from the arrow tracking in the rail than any other bow I have owned. I see no negative affects from it, and this 75 yard group with executioners displays it may not help accuracy, but it dang sure don't hurt it.
Yes Ramrod Mission does use the Darton semi railess design, and Darton does do some of the mission parts supplying and assembly in their Michigan facility. How much Darton Supplies Mission with I'm not sure. Mission is not the only company darton furnishes parts and assembly's for, almost every Bow company in America vertical included, uses technological and parts from this Michigan Archery engineering firm, at some time or another.