It was shared on u2start before as 192kb/s mp3's, but actually filed as "sbd/iem" (the presumably source recording). Perhaps it is all the same, but the Moschino bootleg might have had a mastering job. I don't have the original sbd/iem at hand, so I really can not tell.
NB: On its artwork the "An Emotional Goodbye" bootleg claims to be of the first London show (August 22), but actually most of it comes from the 23rd (well established by the various bootleg info sites, including U2T

O, and yes, I do think the "An Emotional Goodbye" is a true soundboard and not an IEM. I think I can tell by the sound of it and the lack of "counts" and "funky sounds," but mostly because it's full stereo (I'm told stereo iem receivers were extremely rare in 1997 - but, please, correct me if I'm wrong!)
Cheers
