I had an original Aqua Puss back in the late 90's until the prices went through the roof (sold it for $1K in '05). It was a cool analog delay for slapback and subtle effects but I never felt it was as awesome as some made it out to be...in fact Jeorge Tripps came up with the MXR Carbon Copy as an upgrade to the original AP.
It seems like this is sorta trying to be a simplified analog version of the El Cap...I'll be interested in hearing it.