Teeth, thrust me, there aren't any other build than 18/24 on EU1. Also, 30/12 is a shit in melee.
I have tried a 30/12 archer recently. I did way better than with an agi archery build. But that is not because 30/12 is overpowered, but because I just cannot be arsed to shoot the same person 5 times until he dies. Most of the times I shoot whoever seems to be an easy hit rather than a one-shot-kill.
I personlly think it is a quite nice build.
However, like you said, it is not as vertasile as a 24agi build.
I guess that one post about the 10PD "bug" made that build fairly popular, but many people either just suck at Archery (cannot hit anything so even the 10PD do jack shit for them) or they get bored of not being able to do well in melee. So the short influx of Archers will soon settle and it will only be the normal 18/24+ archers left (With one or two exceptions or so)