There's no limitation. Feel free to test anything you want in SunFlow from a plug-in or a derived version of Sweet Home 3D.
Some classes of SunFlow project are missing in [font=courier new]lib/sunflow-0.07.3i.jar[/font] but I don't think they are related to the features you mentioned. Anyway it shouldn't be difficult to rebuild a full version of SunFlow by removing [font=courier new]<exclude>[/font] elements found in [font=courier new]buildForSweetHome3D.xml[/font] entry of sunflow-0.07.3i-src-diff.zip found in source code. This file contains the modifications I introduced in SunFlow to fix some bugs and add support for missing features.

Good luck! [:)]