I used the Naga for about 5 minutes in FFXIV, then went straight back the XBOX 360 controller. FFXIV is just built around a gamepad of some kind, while not bad and still usable the Naga and keyboard are just a slower way to access the interface with this build of FFXIV.
Hopefully they will improve the mouse functionality after release, but I am not going to hold my breath. But for just about any other game, ever, you can't beat the Naga, period.
Edited, Sep 3rd 2010 6:06pm by Pagansaint
Life is to short to waste by being nice to everyone all the time. Have fun, **** a few people off, it's good for your blood pressure and peace of mind.