Haha, nope, I've been a premiere user for a long time and when I bought a macbook pro 2 years ago, I instantly bough the full Adobe suite. Since I'm a heavy user of After Effects and love the PPro-Photoshop-AE workflow without having to buy extra plugins, I see no reason to switch even if I like Final Cut. For what I do, PPro's enough
Since PPro CS3 and CS4 (mac versions) uses native .mov files, would that automatically mean the JVC's mov would work as well as it should in Final Cut Pro?
Yes.
For Mac, you need this: http://blog.lib.umn.edu/mcfa0086/discretecosine/164630.html
For PC, you need this: http://www.calibratedsoftware.com/QXD.asp
Either way, Premiere Pro can edit with the MOV files this new camera makes.