I understand Bitkar concerns.
trueSpace's workflow is soooo efficient, the less we do in Blender the more we save to spend time with our wife and children
Let's take texture painting task. In trueSpace if I want to apply a texture to my object, I just have to clic the Paint tool, select the texture color shader, choose the texture, clic the Paint icon and it's done ! 5 clics only.
Okay, for this time price you don't have all the features the new real-time materials may offer. But who cares ? If you are not designing a video game, and simply want to render an architectural visualization, trueSpace workflow is unbeatable.
Same with scene navigation. When you got used to trueSpace's view widgets and the must-have plugins (ZoomToFit, EyeZoom, FindCamera), moving your eye in a Blender scene is a million years backward.