I did 5,150 miles in three weeks on mine with ~2,800 of that over five days. I thoughts of doing a 1,000 mile day, but the seat and my butt weren't that compatible. Also, the standard windshield is surprisingly effective, but could use an upgrade. My foot peg control and lowering kit was installed on the bike within 200 miles, so I can't say much about the stock geometry for the legs other than it felt a little tight so I changed it.
That said, absolutely, the new Vee could be a fantastic rally machine with the usual upgrades. Even ST1300s and FJR1300s get new seats and windshields for long distance duty.