Hermes Orange is still being made, although the recent batches seem to come in Swift, although I do see a few in Togo on occasion.
T, do you have a 35cm already? I can't remember who has what these days...I love Rouge Garance but the JPG is such a personal choice. I'd snap up the JPG personally b/c that's on my wishlist but we have a lot of Potiron fans on the forum. You'd probably get more use out of a 35cm, but I'd pass if you're not hot on the color and really want the Orange.
Unless you want to wait for an Hermes Orange birkin, I would definitely go for the 35 cm Potiron Birkin. I like the fact that with JPG you can wear it shoulder style, but other than that, I never care too much for it.
i would totally go for the orange birkin. i saw one this past weekend with GH and it was soooooo beautiful!!! i also tried on a potiron toile JPG and it was unfortunately too big on me (i'm 5'3") and felt pretty heavy too.