[anandasama]

Yes you can mark parts of a quote, multiquote and it goes directly into tinyMCE.

It even works with editing posts. I needed to uninstall every kind of bbCode plugins though.

You can see the quote in action here :

http://matsuri.moai.se/topic/the-great-off-topic-thread

Just need to fix the Quote from another page (when multiple pages).