DanLwrote a review of Giordana FormaRed Carbon Lightweight Jacket - Men's on November 4, 2015
Familiarity: I've put it through the wringer
Now that I've put some miles on it. This is a real keeper.
I recently was out in high thirties wearing under armour level 2 (mid-level) base & appropriate tights gloves and booties & I was fine.
I suspect if you live in a warmer climate and are on a budget, just buy this jacket and get a ranked set of base layers and you should be good to go. I didnt have good luck with ranking for Patagonia capalien. UA works well. I haven't compared icebreaker.
Grabbing under arm pits goes away when you start riding--no probs.
Haven't had time to experiment with top end temps...I just use my Gore Xenon soft shell.
Conclusion: its the placing of the panels, perfect cut, and stretch in wind proof panels allowing bulky bases, that make it so versatile