WoW has RPPVE and RPPVP servers that are supposed to be "pristine lore" too. But most of the RP tends to be reserved in guilds and such. It doesn't work that well because unless there is some type of "enforcement", people aren't all that fanatical about lore anyway. And for many who are, eventually it gets old to be like that constantly. Not to mention that many people won't know what the heck you are trying to really say if you're speaking Old English all the time. LOL I remeber some interesting interaction in RP servers, but overall, it's more "normal" than "pristine lore".
With the exception of Moon Guard. Now that's a hardcore RP server.