Finished project:
I am very satisfied - and I say that as a naturally sceptic Dane.
I managed to make pretty invisible weaved-in ends, and I am actually going to LOVE pulling the sweater off and not turning the outside in before putting it on again!

Yarns:
I was surprised to learn in the yarn shop, that what I thought was a whitish main color was rather yellow.

I also didn’t know these types of yarn: Isager soft is a blow-yarn, and alpaca 3 is a tube-knitted yarn.

I’m guessing that one advantage of these types of yarns is that you avoid having to hold two or three strands of yarn together to make a light alpaca fabric.

I decided to use the Alpaca 3 as the blue color in stead of the suggested Isager Soft because I felt the white cotton tube inside was too visible.
In the suggested yarns for version 2 the yellow and blue are Isager soft (the blow yarn) and the red/orange is Alpaca 3.

Alpaca 3 seems to be a little more elastic, and maybe it pulls the fabric more together where it is added.

Size:
I’m knitting size S, even though the pictured fit would mean M or L for me. But a short, snug fit works better with my wardrobe and body shape, I would say.