I am not sure how Hive-Engine would handle things if you would need to change something if you don't have the keys. The problem a lot of people did when creating their tribe is not use a specific account for distribution only, then there is far less risk.

There are scenarios this will bite you in the ass though, let's say Hive comes up with native contracts, if you later want to move off hive engine like some of us will do as soon as possible, you won't have access to your core account anymore.

You will know best, but it isn't a decision I would do without a lot of thought.