Didn't occur until Luclin/Post-Luclin. First only Dun and Eracon Krengon were put on "Banker" faction and not until 2003. Eventually, the Qeynos bankers (Copperholds)... and way later, all bankers were moved from this faction to Beta Neutral.
SOE's dumbing down of certain factions didn't start in our classic P99 eras.
Dun in 2001
http://web.archive.org/web/200104230....shtml?id=2845
Dun in 2003 on Bankers faction
http://web.archive.org/web/200309141....shtml?id=2845
Eracon 2001
http://web.archive.org/web/200104230....shtml?id=2846