Definitely a legitimate opinion.
I'm not so confident Doublelift will dominate the 2v2, especially against Piglet. What I am confident about is that Doublelift getting ahead is essential for a TSM win. The easiest way to do that is lane swap and drop the outer towers fast, accelerating the mid game so Doublelift will reach his power spikes sooner.
A lane swap also benefits TSM in the CLG match up because it guarantees that Darshan is in an unfavorable matchup. If it's Darshan vs Hauntzer yeah there's a chance Hauntzer wins but there's also a chance Darshan wins or Xmithie executes a great gank and gets Darshan ahead. Lane swaps are great for denying the top laner gold and accelerating the gold and experience gain for the ADC, both of which favor TSM. TSM doesn't care if Stixxay gets gold because they feel Doublelift will out scale him. Their concern will be shutting down Darshan.
Not only that but if Doublelift goes into a 2v2 lane against CLG you better believe CLG is going to camp the crap out of their former ADC. It's a much safer option to put him in a 1v2 lane.
Thanks for the feedback.