It's a fascinating paradigm – as though it dropped here out of some future.

However, I'd never use it. Reason: having everything dynamically created JIT means there's a trade-off somewhere else; in this case, it's energy consumption. I'd rather "cache" applications (ie. have them as installable software, which has been built just once) than endlessly recreate software from scratch each time, with all the energy usage that entails.