I help out with Vuo support and I'm part of the think-tank called "Team Vuo." Depending on our present needs, some of my work can be writing about and sharing the Vuo story. We believe there are all kinds of people who will embrace Vuo once they discover it’s out there!
If you use Make Perspective Camera and set the FOV to 180 degrees, is that the same as fisheye?
No; the geometric projections are different — Vuo's perspective camera uses a rectangular frustum, and Vuo's fisheye camera uses a spherical sector. (A rectangular frustum can't actually go quite all the way to 180° since it becomes degenerate.)
Just for clarification, Vuo has two types of select nodes, such as Select Output (2) and Select Output (Boolean). The documentation for the first says, "If Which is 1 (or less), it selects Option 1. If Which is 2 (or more), it selects Option 2." The documentation for the second, "If Which is false, it selects False Option. If Which is true, it selects True Option." The type converter Convert Boolean to Integer documentation: "Outputs 0 if the input is false or 1 if the input is true."
Some applications automatically scale down textures that are larger than the GPU allows. Currently Vuo doesn't do that; instead it refuses to load such textures. (If you're interested in that, or other ways of processing textures beyond the GPU limits, feel free to create a feature request.)
We'll look into adding information on texture size limits to the documentation.