The benefit of the OpenDime though is that the receiver can be pretty confident you don't know the private key. Handing someone a paper wallet is incredibly insecure for the receiver. If I was accepting a paper wallet from someone it would have to be someone I trusted enough not to scam me, and in such a case I would trust them enough if they said "Give me your address later and I'll send you what I owe you."
I have them more for people who don't have phone wallets or don't want to have that much
BTC in their hot phone wallet.
If you don't have the ability or the desire for me to send it to you right then and there you take what I give you :-)
Somewhat of a hardass attitude I know, but I think you get the idea.
Not to mention opendimes and the like have a significant cost to them.
If I have to give you
BTC0.0051 ($200) at the current price and you don't want it on your phone for whatever reason, do I give you $180 and you eat the cost of the opendime or do I give you the full $200 a tip of a $20 piece of equipment.
-Dave