I can't say I'm an Ubuntu CE user. Mostly because I've only been an Ubuntu user for a few months. I do use BibleWorks 6. And I'm currently running it in Dapper using Wine. It's installed under a Windows partition, so I run it straight from there.
I do that because I haven't been able to get it to install. Running the installer under Wine always hangs on 100% because of some 'network' thing (I can't now remember exactly).
I wondered if anyone else had managed to install Bible Works straight onto Ubuntu... I looked on the Wine compatibility list, and I was the only contributor.