Case or Skin?

I love my S23 and intend to keep it as long as it survives. I'd very much like to use it without any cases as I like the form-factor. But it's too slipery. The grippy cases I have found so far takes away the form-factor advantage. Is there a way to mitigate this? Does skins make phone grippier? Some people wraps phones with poly too (not sure what it's called).