I think the reason these (ridiculously small) details are raised and debated so much is because we're all a little "nuts"....
We all want the EXACT same jacket as Hugh Jackman wore.....But we all have different body shapes, and different vendors, and different price scales to fit into, so we all just do what we CAN do, and then talk about it here, endlessly.....Heh....It's nuts, but it's also fun, so, all good for me....
The 350 dollars is well spent I'd say...I had a Wested, and am more impressed by the wolverinejackets.com version, although it's a touch more expensive...But only a touch, and for that, the flat back is easily accepted.....The movie version is duck tailed, sure, but there are scenes where it's so slight it's hard to notice, and only "we" would ever do so....So...Just depends on the buyer...
That said, it's always good to talk about the differences here, so that people CAN actually get closer to the "real" thing....If they wanted to do so....
What I'm trying to say is, we're all nuts, and all to varying degrees....And we now have 151 pages and counting of pure nuttiness....How badass is that?