There isn't much of a difference in the risk of rupture between a VBAC and a VBA2C. From memory, the rupture rate for a VBAC is 0.7% and VBA2C is 0.9%.

I had a csection in January 2007, csection in August 2008 (5 years ago today actually!), then a VBA2C in November 2009 and another one in March 2011.

VBA2C is definitely achievable and carries less risks than having a 3rd c-section.

Oh, and my scar didn't hurt during labour at all.