FT fleet proxies?

I have a Japanese fleet that I ordered because I liked the way the ships
look.  I'm 
not particularly interested in the GZG universe, and I'm not at all
interested in 
having a Japanese fleet.

Does anyone pick the models that they like, and the fleet design
doctrine that they 
like, and mix and match fleets?

I'm attracted to the NAC designs, and played a battle the other day
using some 
designs from that fleet with my Japanese models.  I think I'm likely to
play the 
Japanese ships as a human fleet of no specific nationality, using NAC
designs.

Do other folks play with GZG ships, without thinking of them as the
specific fleet 
from the GZG universe?

Do other folks play with GZG ships, using the designs from another GZG
fleet?

One of the things that I like about some of the other models is a lack
of obvious 
guns, allowing proxying more easily.  The Japanese ships have visible
guns, and 
that might make them harder to use other designs for, but I don't think
it'll be a 
problem.  As I've mentioned before, I'm not crazy about the Japanese
fighters, and 
hope to order some NSL and NI fighters sometime to see what they look
like.

thanks,
andy