Yes you can have it all in one tree. Here's the latest update on my super multi-grafted citrus. As of 12-03-2006, it has 50 unique cultivars and more than half of them are loaded with fruits. This tree existed in my dreams and now a reality.
Here's my album that traces pics way back in 2001.
http://albums.photo.epson.com/j/Albu...&a=32379566&f=
And here's the link to the citrus forum showing details of its current fruits.
http://citrus.forumup.org/viewtopic....&mforum=citrus