I haven't drawn a 2D elevation from scratch in Datacad in years. I find that 3D modeling is so much faster in S-U, and much more intuitive, particularly in the conceptual and Design-development phases. Then I either export a 2D .dwg of the views I want back into Datacad for further detailing for construction, or use S-U Layout to document for construction. Often I use both methods and recombine the results as .pdf-drwgs that I integrate back into a unified paper-drawing set using PDFill Tools into one .pdf-file for distribution.
Each system has it's advantages and drawbacks, and you have to experiment to see where you need a "work-around" -- depending on your needs. I do a lot of small projects that don't involve weeks of working on the same CAD files to a high degree of complexity. Finding a design solution, and documenting it, might require totally different approaches. I'll admit that I still don't really understand Datacad's 3D features very well, I've been using S-U for modeling and presentation. Conversely, I use Datacad exclusively for Floor Plans, Sections and Detailing since S-U and Layout really aren't drafting programs.
The biggest drawback of S-U and Layout is in their symbol libraries, or lack of; doors, residential windows, plumbing fixtures. And since Datacad isn't a .dwg-based CAD environment, there's a lot of extra steps taking a mfr's Autocad detail library symbol and converting it in Datacad to a usable S-U component. Andersen Windows Studio being a prime example. There are third-party apps, macros and component libraries out-there for the S-U / Layout work-environment, I just haven't had the time or need to invest the time in finding and experimenting with them...yet. Some of the dynamic-components out-there for kitchen cabinets in S-U are amazing for-example, but I don't design and model kitchen at that fractal-level.
The newest versions of Datacad and S-U support greater interoperability, I just have not had the time -- or the professional need -- to really explore them yet. In-part since I still don't really understand the 3D-side of Datacad, and I haven't up-graded to Datacad-16 or Datacad-17 yet. As a one-man home-office-based architectural practice, I just don't use either Sketch-Up/Layout or Datacad for enough hours each week to be a "power user on the bleeding edge", I'm happy just to get-by and move-on.
On the other hand, I've been doing this do for a long time. I've been using Datacad since it was part of Cadkey in the early 1990s, and Sketch-Up for nearly 15-years since the @Last Software days-- long before it was bought then sold by Google to Trimble. Ironically, I started on Autocad in the 1980s in the days of PCs running MS-DOS on 386/387 machines, although I haven't touched Autocad since probably 1996 or 1997. I stopped going to the Autodesk seminars when Revit and Architectural-Desktop came out. I'm not even sure I would remember how to even use Autocad at this point.