All my libricationgear is leftover from another project, so i'm not even sure i'm going to use it. At the moment it is the plan to use it...buuuut, the stuff from the two manufacturers you've posted look kinda promising!
I haven't modeled it other than a couple of mounting holes... i'm not a huge fan of Fusion360 way of modelling pipes(i tried, failed and dropped it)... but it is for sure som impressive detailed CAD drawings you have! I'm slowly starting to feel the "CAD death", i just want to build something :-)
One thing, though: it looks like you are referencing the railtrucks on both rails...is this intended?