Actually, we at Sunday Bicycles have decided to use it as our preferred OE supplier for groupsets in 2009. We're sorting our specs out now to launch the 2009 range on 1st October.
This year we used Shimano, mostly. We looked at SRAM for 2009 not because there were any issues with Shimano (preferences, maybe, but no tech issues) but because theres been a massive availability issue on Shimano groupsets in the trade this year, and this was giving us a headache.
Once the guys from SRAM came to see us, we were really impressed. Its a bit expensive as an after market purchase, but the quality is excellent. Its really comfortable and you get used to the double tap thing in about 2 minutes. The cassettes are also shimano compatible.
In terms of trim (adjustment) on the front shifter, Rival in 2008 (which you can buy cheap online at the moment) doesn't have it, and this would have been a weakness (you being told about the 'sudden' front shift might be this). However, for 2009, rival has trim, it also has carbon levers and its lighter than Ultegra SL.
I've no doubt we'll continue to sell Shimano and Campag, but SRAM have convinced us to give them a go as the preferred option... and i'm saving up for a RED groupset on my own bike (for 'customer test and demo' purposes only, of course!!)
Give it a go, we have been well impressed!
Greg