At my last job where I work, I routinely went out and shoot pictures during lunch hour, and didn't feel much resistance most day. In fact, I rather enjoyed it, possibly because I worked on the first floor of the building and it was easy to just go out. But, this job I work, if I have to go out, I would have to wait for the elevator, then go down 17 floors, and finally outside. Maybe it's an excuse, but I find it has become one of my obstacle to tackle every time I wanted to go out and shoot at my lunch hour.
The Xenon 50mm f1.9 DKL is one of my favourite 50mm lenses. I especially like the bokeh it produces, but it also performs excellent as a normal lens. Extremely sharp, and well made, and I think it would be wonderful on the NEX full frame :)
All pictures below were taken with the Schneider-Kreuznach Xenon 50mm f1.9 DKL mount and Sony NEX-6.