Clubhead Square at Impact, Clubhead Traveling Down the Target Line, at Maximum Speed Equals Straight Shot with Slight Draw."
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If you have a square face at impact and coming down on the right plane with a slightly inside/out plane line you'll hit a small 2-3 yard draw which is what they are trying to accomplish.
You tell the AVERAGE GOLFER to hit the ball with a slightly open face when they already bring it in WAAAY open and the product wouldn't work.
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I'm not a TGM or PGA certified Pro, but I did stay at a Holiday Inn Express last night
There is an image of a ball on the mat an inch or 2 before you hit the velcro wall. So by the time you hit the wall (low point?), with the face square, you're already past impact; so the club is actually slightly open at impact.