Thanks for the Allegro thoughts; I'll just drop that one off my list. It was close to the edge anyway, since it seems to have only recent (beta-quality, untested) Android support.
I'm using Dub for my C++/Lua bindings, which provides exceptional C++ interop. Dub also is easily modified, and with my modifications I can have C++ objects referenced by smart pointers that are wrapped in Lua objects, and those objects can have additional Lua "tags" added to them that persist for the lifespan of the C++ object (even if all Lua instances of the object are collected).
You just can't beat LuaJIT for speed; speed isn't that important for scripting on desktops, but can be relevant on mobile. And it's hard to beat Lua syntax to enable non-programmer scripting options.
Have you seen the LuaJIT FFI by the way? Very similar to what AngelScript offers. But it's also JIT-compiled by the best dynamic JIT compiler in existence. :)
I use AngelScript, because the C++ interop is about as good as it gets. Chaiscript isn't bad, but its lack of coherent community scared me off.