When we used curb side check in (on NWA) with e-tickets, the man checking our luggage also gave us a boarding pass. We went right from the curb through security and to the gate.
I'm not sure what your airport's procedures are at this time. At MSP, you used to be able to get through security with just the e-ticket receipt/itinerary. We did that when we only had carry on luggage. However, I recently read that now you must have a boarding pass. Even if you need a boarding pass, it is very easy to get one if you have an e-ticket. Most airports/airlines have electronic kiosks for their e-ticket customers to use to check in. You just insert a drivers' license or credit card and the ATM-like machine asks you the security questions and prints out your boarding pass. There are almost always airlines employees nearby helping people through the process. It's very easy and very quick.
I personally love e-tickets and do not want paper anymore. It's one less thing to worry about losing. All you really need to check in is your picture ID!
Enjoy your trip!