Turns out that Godot ended up auto-importing my Blender models with pretty much zero hassles (drop 'em in a project folder, save 'em back out as a Godot scene), and it was a short time after (under an hour, including the time it took to read some docs to familiarize myself with GDScript) I already had mouse/controller clicky code attached to them and a first person camera controller in place. Since then, the more I learn about Godot the more I enjoy workin' with it, pretty much like my experiences with Blender. :)
Of course a large part of my affinity for Godot could be influenced by my love of Python and the similarity of GDScript to Python code.