Just finished a small project with blender 2.41 and Indigo 0.5 (www.indigorenderer.com)
Indigo seems very capable of architecture viz work 
I was supplied a .3ds mesh, the goal was for the client
to see/decide which parts of the house would have weatherboards
on them and which parts stucco (plaster).
Given limited time I imported, textured and rendered one full frame and one composition (not the actual site/location) of the house in 2 days.
Here’s the images:
Comments welcome…
Greetz,
radiance