I used to think this, but I think it's a bit like how players using BHE tend to get more spin. They're braver to hit further off center, because they're not having to align to judge the squirt.
Few players learn to align at max offset and stroke straight though the CB using side english. This contributes to their feeling that they can get more english when they swipe to the outer offset margins.
The math doesn't work out, imho, after thinking it through after some insightful critique by PJ.
Colin
Consider the contact time where the tip compresses and rebounds.. At firm speeds where contact times are getting close to equal at 1ms maybe there would be no discernible increase but on softer shots where the cue is staying in contact for longer periods and over greater distances the cueballs reaction will be different if the swerve/tuck and roll carry the tip outside of what would have been permissible misscue limits for a static stroke... At least that is what I see happening when I am trying to load the ball up with spin.. When I see lots of professionals evolving to utilize it I think there is way more merit than to toss it aside without serious testing and since we have no real testing labs to replicate the stroke required it will be up to the payers to try it and see if it's something they need to put in their toolkit...