N1 Owners... Do you also own a DSLR?

Yes.  I have a D7000 with a pretty complete set of lenses for my purposes.  When I really need to get a shot right or the shot is particularly challenging, it is the camera that comes out.

I bought my little J1 to supplement my DLSR.  I use it as a walking/screwing around camera and for family snapshots.  While not in my DLSR's class, it blows away the P&S that it replaced.  In a pinch, I use it for short videos of my daughter.  As a travel kit, the J1 with the 10-30mm and 30-110mm lenses covers a lot of options with a very small total setup.