Well, after a lot of ummming and ahhhing, I have tonight taken the plunge and ordered a pair of tektro 520 v-brake drop-bar levers, an accessory bar for the shifter, and a pair of pro lt drop bars. I kind of missed the drops on my audax, because riding on the hoods (although hardly ever on the actual drops!) was my favourite riding position. I have to say I also love the look of SG's raven sport with drop bars.
All being well I should get them fitted next week some time, so if anybody wants to buy a pair of used ergon rohloff grips and a pair of XT levers.....altho' I may keep them to give myself the flexibility to change back in the future. I'll also seek out the black brooks bar tape that's lying around somewhere.....and the knee pads!!
I will post some pics once I emerge from the garage!