So if you can take 2 identical 7.4V lipos and wire them together to run as 1-14.8V lipo can you also charge them together as 1 14.8v lipo?

Yes you can but it is not recommended. The cells are not matched from 2 different packs and may have different voltages after usage.

There is detailed info on it from Thunder Power.

http://www.helihobby.com/html/charging_batteries.html

You can using the Hyperion chargers link together, but it's not really recommended any other way. Better to charge/balance them individually.

The key is connecting the balance taps so the 2 lipos are balanced together as a 4S lipo. There's no reason it won't work if you balance them together as single batt. The reason its not recommended is the wiring has got to be right for the balance taps.

Airplane guys do this a lot - RCGroups' batteries and charger forums is a good reference. You can also PM BrianG, mod on RCMonster forums about doing this - he's a mod on another site (can't remember) and I've read some of his discussion on how to wire the balance taps.

The easy way is a pr of networked 0610i chargers.