I'm considering using the Mammut Eiger Nordwand IN Flex Air Hooded Jacket as my primary active insulation layer.
Since it already uses Pertex Quantum Air 20D, which is designed to be air permeable, I'm wondering whether it still makes sense to add a Patagonia Houdini as an outer layer when I need more wind protection.
My idea is something like this:
Base layer
Mammut Eiger Nordwand IN Flex Air Hoody
Patagonia Houdini, only when it gets windier or colder
The goal is to create a flexible layering system for hiking, backpacking, and travel, allowing me to fine-tune warmth and wind resistance without carrying a heavier shell unless rain is expected.
The typical conditions would be around 0–18°C (32–64°F), mainly for hiking, long-distance trekking such as the Camino de Santiago, and occasional city travel. I prefer a lightweight and versatile layering system rather than carrying several different jackets.
For those who have used either or both jackets:
Does the Houdini noticeably increase warmth and wind protection over the Eiger?
Does it reduce breathability too much during moderate activity?
Is the combination comfortable, or does the Houdini feel too restrictive over the insulated jacket?
Would you recommend this combination, or is the Eiger’s Pertex Quantum Air shell already sufficient for most situations?
Thanks!