^ Latencies will be higher across the board in DDR3, but given the huge amount of headroom provided by the architecture, I don't see that as a negative. Once DDR3 gets rolling, it will be the standard. Latency doesn't mean as much as it used to, especially for overclocking; slower timings don't necessarily equate with poor memory performance, especially if your memory bus speeds are very high.
But I guess the point is, the guy wants to buy something today, not next year at this time, so the P35 is a great chipset and pairing it with DDR2 is not only ensuring great performance but cost-effectiveness.