While I don't have any particularly unique information to share, I figure that it never hurts to add another data point or two. I had the use of an SOC meter for about 24 hours, having borrowed tbleakne's unit. Saturday night and Sunday morning, I charged to 100% using L1 with an average ambient temperature in the 60s. The reading within 15 minutes of charge completion was 276. On Sunday we drove about 40 miles (end SOC ~ 57%), then charged up to 100% at tbleakne's house on L2, with 70ish temps. The reading immediately following charge completion was 275. We've put on over 4500 miles in over 4.5 months of ownership.
Also, we had no trouble driving home to the mountains from tbleakne's house. After a total of ~50 miles and 4900 feet of net elevation gain, we ended up with one full bar of charge (and sadly, no SOC meter; I'll have to order a kit). Of course, that required gentle, efficient, somewhat slow driving on the 210 freeway and Highway 330.