I've done that a few times - works well when the balls are REALLY close together. Since it's essentially a masse shot, it's difficult to control the distance (and maybe the exact direction) the cue ball travels. This is also a way of getting "after contact masse" on the CB - say if you want to get straight in on the other object ball, you could hit downward on that side of the CB to move it over that way (instead of drawing it straight back as you show).
Bob Jewett has described another method of avoiding the double hit when the balls are a little farther apart (say a couple of inches). Line up with your tip almost touching the CB, then rest the butt of the stick on the rail and move your grip hand up until it's just an inch or two from the rail. Then stroke the shot normally but let your grip hand run into the rail, stopping your stroke with only an inch or two of followthrough. (Obviously, you only want to use this technique when you're not shooting very hard, or you'll end up with a sore grip hand!)
A third way is to use more than maximum sidespin with the draw, intentionally miscueing to the side to get the tip out of the way of the CB as it comes back. But this way you risk being called for an intentional miscue foul. (I think this is called a "fouette".)
pj
chgo
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