Correct---I am not looking to use a 3rd party or give anyone else control over my keys.  That's not what I'm talking about.

I tested sweeping paper wallets and hardware wallets and it just isn't supported with legacy addresses, nor is development planned.  I appreciate the straightforward answer and it makes sense that future development would be toward native segwit wallets. 

I now just need to learn if cold storage with native segwit (bc1 address) has any downside.  I don't understand it as well, can't seem to get block explorers to work, and likely wouldn't receive future forks.  I just need to learn more.