Recent experience. I have been playing around with the OW RTW tool for a while and I made the booking yesterday. I worked our exactly what we wanted using the tool. I spoke to BA (I am lucky enough to have Gold Guest List status for now). The agent advised me to send him the itinerary. He booked it, but had to call me with one slight modification (D class was not available on one sector, so we had to change dates). He then sent it to ticketing and it was issued a few hours later, on a BA ticket number. My Amex was charged in UK£ (even though the fare shown was in NOK). I was able to pick seats on all sectors via the various ariline web sites, using the PNR (he gave me the AA locator for the one sector). The only failure on seat allocation is a long sector on Fiji. We start in Olso as it saved us about £2.5k each vs. London (the agent was aware of this). (Thanks to FT for this piece of infromation). So far so good!