[Owncloud] Templating engine or not?

[info at s8inac.org]

Hey,

yesterday we had a discussion on irc about templating engine or not.
We all agreed we have to seperate views.
But how was the question.

Lets start with pro for templating:
- easier way to seperate application logic and views (think about MVC)
- webdesigners could contribute this project
- ...

and contra:
- dependency on 3rd party software
- isn't php a template system?
- ...

We would prefer PHPTAL as a templating engine beacause i have  
experience with it.

What do you think?

kinds regards
- Simon