Put the minor 6th chord of Example 5 together with a diminished 7th chord, and you get Barry's minor 6 diminished scale.

An interesting and useful feature of the major 6 diminished scale is that it contains two dominant 7th chords: the V7 of the tonic and the V7 of the relative minor.

Playing a minor 6 diminished scale beginning a half-step higher than the root of a dominant 7th chord covers the root, 3rd, monor 7th, and all of the commonly used altered tones. You can even think of the minor 6 diminished scale as an altered scale when you use it this way.