As the OP I thought I’d update this thread.
In the end I ordered a Alpha ROS 2 and it arrived today, below are my observations from owning both a Perfetto and now the Alpha.
The Alpha is NOTHING like the Perfetto – it’s a much thicker jacket entirely and double lined. It still has a ‘race type’ cut of the Perfetto but the similarities end there.
My impression so far:
Excellent quality
Appears very warm and snug
Great design
I’m pleased that I ordered the jacket, I’d have sent it back if I’d not liked it and it wasn’t significantly different to the Perfetto.
Is it like wearing a Perfetto with a Perfetto gilet – NO!
The Aplha should be the perfect cold weather winter jacket for me.