Hi
I doubt there already are Event owners...
I think the good question would rather be:
"Are .pat and .kst files compatible with EVENT? Or easyly upgradable?"
Backward compatibility rarely exists...
And one among the answers could be:
"What to do? As one would loss all the new technology and possibilities of EVENT..."

To rphillipchuck, as an Audya user, I can tell you:
- style modeling you 'view' the arranger 10 tracks (2 drums, bass, 2 low, 5 chords) and you can modify some tracks ON THE FLY with prerecorded ones; you can save the new style
- style editing allows copying style elements from one style to another ... and save the new one
- style editing is useful and allow you to create a style from scratch if you want, with up to 32 bars....
... we will know a lot very soon...