Comment by vvanders

Yeah, it's a fairly clean and natural divide. You see it in most of the major engines and it was present in all the proprietary engines I worked on(we mostly used Lua/LuaJIT since this predated some great recent options like quickjs).

We even had things like designers writing scripts for AI in literate programming with Lua using coroutines. We fit in 400kb of space for code + runtime using Lua on the PSP(man that platform was a nightmare but the scripting worked out really well).

Rust excels when you know what you want to build, and core engine tech fits that category pretty cleanly. Once you get up in game logic/behavior that iteration loop is so dynamic that you are prototyping more than developing.