6" metrogon lens opinion for 8x10?

Hi

Ive never seen this lens before and was wondering if anyone out there has an experience with it.
Coverage and image circle? Id like to use it on my 8x10....

http://www.ebay.com/itm/190795285363?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649


Thanks
Paramat

This person on Flickr has mounted and used one on 8x10. That's about all I know.

https://secure.flickr.com/search/?w=all&q=metrogon+8x10&m=text

Jonathan