Decided to pc my nRewards card to flagship today after reading a few success stories and wow was it easy. No additional information required, only drawback was my points would not carry over so I had to redeem them before pc. My CL and APR carried over and I believe this was all done with a SP. If you still have a nRewards card in your wallet I would recommend a pc to Flagship, NFCU makes it hassle free and Visa Signature benefits!!!! Im stoked! 
Starting Score: EX FAKO 566 EQ 552 TU 568 (07/2010)
Congrats! I did that last month... already have the shiny black card 