TheMumbler wrote: steve left his (with the stronger flavours) at room temperature which may have resulted in more roastiness.
tap cold and in cooler overnight but SHOULD have fridged it really - with just carafa special i think you could get almost no roastiness but all the colour and no bitterness from overnight cold extraction.
It's by far the best technique for extracting coffee flavour too - easiest to do in a cafetiere.
From taste out of secondary I agree that the hint of roast works nicely as late taste and back of the mouth - it's NOT dominant at all and I think with some maturation will blend in nicely to create a pleasant complexity.