Hi Albano.
Stephen's already covered off the considerations for SAP SSO - as ever read the relevant section in the admin guide and you shouldn't go far wrong.
With regards to use of OrgHub for Mobile, you may have noted a new Nakisa whitepaper was published this week that relates to rolling out this application. At this point I should mention (full disclosure) that I'm an author of this paper; downloads are available from my organisation's web site (see my SCN profile for details) and from Nakisa's web site.
Regards,
Stephen.