I also have a Truvativ road crankset rated as 10-speed. I put TA Specialites chainrings on it to customize the gearing, and then started having the same problem as you, with the chain occasionally slipping between chainrings. I haven't used a Dura Ace chain, I believe it is an Ultegra 6600 that I was having the problem with. Instead of going back to the stock chainrings, I actually resorted to filing down the faces that the outer chainring clamps to, which made the chainrings slightly closer together. The problem has now disappeared. When filing, I removed all of the black paint and then a tiny bit more, maybe 0.2 or 0.3 mm total, I don't remember exactly, but I was using some calipers to measure it to try to get the amount consistent on all five tabs on all parts of each tab, but that was not easy. It seems to have solved the problem.

I would therefore say that your problem is mainly caused by the non-stock chainring, but for some reason didn't show itself until you got the new chain that has a slightly different shape to it.