We currently use it quite extensively and really like it. Very good quality software as there is rarely any "bug fixes"...in other words, they've done a good job in their quality control. It currently allows very fast input, numerically through a kind of spreadsheet format or graphically....its all woven together. Compared to my experiences with a number of other products, it is the easiest/fastest/most inexpensive of all.
It designs in steel or wood. Supposedly, concrete is coming out in the future. They also have a base plate and footing program as well. Does second order, animation, rendering, etc. Lots of graphics.