> By the way, I actually saw that orgmode has special faces for code and
> latex fragment, but moving the cursor on an equation environment, the
> face is 'default'!?

I don't know about a face for LaTeX fragments... I guess you're not
refering to `org-formula' which defines the face for tables formula?

> Would be nice, if anyone can give some ideas about there workflow
> using orgmode and latex...

Definitely.  

And don't forget to get famous by feeding the tutorial section about
this on the website:

  http://orgmode.org/tutorials.html

-- 
Bastien