I tend to use the Tri-Elmar (1st version) as my "outdoor" lens for the R-D1 for subjects where I know I need to have this flexibility. I shot an outdoor wedding with in a little over a month ago and it was very satisfactory. Likewise I had a trip with friends to an outdoor museum, and again it was all I needed. Again, it is an ideal lens for the R-D1 and flash, wehere the f/4 maximum aperture is not an issue.
That said, the lens I use most is the old 35/1.4 for its small size and lower contrast level. For available light shots it's this, or the Noctilux. If I need something longer, the 90AA is my current choice.
Since I only have the 21/2.3 SA and the 12 CV, I am eagerly awaiting the new 21/2.8 Biogon.
Attached image is with the Tri-Elmar at 50mm, ISO 200, 1/125 at f/11, raw file converted to monochrome with Convert to B&W Pro.