User blog comment:Fistful of Force/Lane swapping: The forgotten tactic/@comment-108.176.231.245-20130202035745

Don't forget though that the jungle set up influences the current lane-meta. Swapping with bot to create 2v1 lanes can be risky because both sides will have a 2:1 advantage in one of the lanes, if you've swapped then your opponents are in a very good spot to farm dragon, and a dragon kill is generally worth 1-2 champion kills.

I do think people would benefit from at least considering lane swapping though, if nothing else it helps to get people thinking about match-ups, but you'd probably need excellent awareness from your jungler and mid to contest dragon properly.