Panasonic
Conceptually, you are correct. In practice, the Fuji allows you to adjust the convergence point and I think that's where their design falls short. Using the method they recommend, the 3D effect was very much exaggerated where the Panasonic was more realistic. Their "sweet" spot is about 1.5-2 meters, so any closer and you'll see some exaggerated 3D. Beyond that distance looks very good.
I think, this time, 3D will catch on and become more main stream. If you look back to VHS vs. Beta and later on to BluRay vs. HD DVD the winner was the format that the Adult video industry adopted. There are already over 25 titles in 3D and Hollywood has already started converting many classic movies. To me, this says they are in it for the long term. Soon I also think you'll see 3D w/o glasses.