I guess it's all about getting used to it. I have a few balls with no inserts.
You do come out cleaner, but the amount of revs, definitely goes down. I also have to be more precise when I change to a different release.
Occasionally, I have gotten moisture or oil on my fingertips and not realized it until I go to a different release, and then the ball comes off my hand in a totally unexpected mannner. As I said, I have to be a bit more precise, and pay strict attention to where I place my ballhand at all times, when using no grips.
--------------------
Duct tape is like 'The Force'. It has a light side and a dark side, but it still holds the universe together.
Some days you're the bug some days you're the windshield.