> According to wiki some of the powerbooks have the older r200 video

Yes, those are the two latest ones of the four Titanium revisions.

http://support.apple.com/kb/SP62
http://support.apple.com/kb/SP75

> so they should work fine with 3D. Yes/No?

Yes, 3D support surely wouldn't be the problem with them. But there's more to supporting a complete system than just having drivers for its GPU ;-)
Btw, support for the remaining Aluminum revisions (except the initial one) with R300 series GPU has been said to come maybe in MorphOS 3.2:

https://morph.zone/modules/newbb_plus/viewtopic.php?topic_id=8709&forum=3&start=7