Ultimate Translate - Permalinks - Question Before I Install

Hi there -

I think this plugin might meet my needs. I have a client that wants to add support for a second language, and they will translate all pages/post manually. I've looked through the forums and support, haven't found an answer to this, without installing first.

If the current structure of the site is as follows (in English):
clientsite.com/page1
clientsite.com/page2
clientsite.com/2011/01/post1
clientsite.com/2011/01/post2

They want to add Spanish versions of each page - do the pages in English remain as they are?
I want to make sure /en/ is NOT added, i.e.:
clientsite.com/en/page1

And the Spanish versions would be something like the following?:
clientsite.com/es/page1

How are the Posts formatted?

Thanks!