Seems I've basically pinned down when the Leatherfoot bags went into the game, either may 8th 2001 or may 8th 2002 I believe however that the patch was may 8th 2002. Here is the wayback link. I'm not sure what era of EQ it was to be honest. It could be either Velious or Luclin. I'm not certain how often EQtraders updated their info on the site. But it really seems like may 8th 2002 is the correct patch date. Does anyone have patch logs from EQLive?
Here