Is it noticably slower? Saw the kotlinconf Gradle session and it sounded like it was 😔 We've got a significant number of groovy tasks as well so it's not a simple conversion...

You can migrate gradually. And It's slower for project intialization, but becoming better

For a bigger project, every but of time counts 🙂 I've used the Kotlin Gradle support in the Droidcon Boston app though... Was easy enough.

Yes, for sure, but after first sync it shouldn't be slower, main overhead is static accessors generation