Nuxeo Document Management for the Construction Sector

Hi All 

I am wondering whether there are any users/ partners that have implemented nuxeo for the construction
sector and/or CAD/Engineering user base? 

Their are various pieces of industry vertical functionality that I would be interested if other users have
tried to use Alfresco for: 

1) Document Issuing 
a) Revision history and subscription based upon issue list.
b) Auditing of viewing/receipt. 

2) Handling of CAD type documents.
a) Extracting Meta-data from CAD documents (autocad etc). 
b) Saving meta-data into CAD documents (revision history)
c) Viewing /Editing / Redlining CAD documents in place. 

3) The concept of a Project, with associated meta information (i.e. clients, subcontractors, suppliers,
advisors, 3rd parties)

Please if anyone has had any experience I would appreciate the opportunity of discussing the
functionality fit already existing and the work required to shape the remainder.

Many Thanks, 

James Salt