Way back, I believe that the SOTA Panorama speakers were similar in appearance and build to the WP. Hyperion speakers had the same look as well, though they were one-box speakers.
Speakers that copied the Wilson Watt Puppy look
Joseph Audio Pearl
Hyperion 968 and 938
Von Schweikert VR4's VR5's
Aerial 20Ts
Hansen Emperor
PBN Pennywise speakers
Genesis 500, 501
ARS Gravitas Max. Here's a pic of the ARS.
http://www.audioasylum.com/audio/speakers/messages/31/319947.html
Supreme Audio Pulsar D8
Here's a pic of Supreme Audio Pulsar D8. They really copied the Wilson look.
http://www.studio-22.com/pulsaraudio/supremad8/supremad8.htm
Gradient Revolution
Electrocompaniet NORDIC TONE
ACI Jaguar / LFM speakers made with built in amps.
Here's a pic of the ACI speakers. Its at the bottom of the page
http://mccollums4.home.mchsi.com/
Hyperion 968 and 938
Von Schweikert VR4's VR5's
Aerial 20Ts
Hansen Emperor
PBN Pennywise speakers
Genesis 500, 501
ARS Gravitas Max. Here's a pic of the ARS.
http://www.audioasylum.com/audio/speakers/messages/31/319947.html
Supreme Audio Pulsar D8
Here's a pic of Supreme Audio Pulsar D8. They really copied the Wilson look.
http://www.studio-22.com/pulsaraudio/supremad8/supremad8.htm
Gradient Revolution
Electrocompaniet NORDIC TONE
ACI Jaguar / LFM speakers made with built in amps.
Here's a pic of the ACI speakers. Its at the bottom of the page
http://mccollums4.home.mchsi.com/