I'm not sure how many 1571 clones there were, but I've never seen one in person...
While putting away an Amiga 1020 5 1/4" drive in the storage today, I came across a Blue Chip 128 drive. At first, I thought it was an ordinary Blue Chip drive, because both use the same case, but the label in the front identified it as the 128 version.
Peaked my interest,
Fresno Commodore User Group http://videocam.net.au/fcug