Yes, it's always important to be able to import a paper wallet, it's a basic step. 
And it's also working for every private key, no matter where it's from, easy to import.

Knowing the difference between importing and sweeping is also important, see Importing Vs Sweeping Private Keys; What you need to know.
Importing means, you'll get access to your original wallet (which you are importing) = you'll make your original wallet accessible in Electrum.
Sweeping means, you'll create a transaction sending your coins from your (paper) wallet to your preferred Electrum wallet = coins are transferred.