Easily. A properly configured (read: one with a flat, undercut leading edge) cap iron interfaces with the blade back along a line. The only thing that matters is that both the leading edge of the cap iron and the corresponding line along the blade are parallel where they mate such that they do indeed form an unbroken line. If you apply a back bevel uniformly then it doesn't matter how far back it extends, within reason. The only thing you can't do is apply any sort of curvature.