I checked wine last weekend out of Germany into the US on US Airways. No problems at customs whatsoever (it was declared). You may have to pay a duty on it if it is above the allowed personal exemption amount, but you should have no problem keeping it.
I usually don't go so high tech when checking wine back in my checked luggage, but I'm not buying super expensive wine, either. The bottles fit nice inside of an athletic sock or two, and then further wrapped in an article of clothing. I usually use the straps that are inside my luggage to strap them all down afterwords.