A word of warning re Halcons and Paramo in general. They will let water in under certain circumstances, most notably if you press them against your skin when it's arsing it down. That's why they have the big foam strips in the back, it's to stop the pressure from a rucksack forcing water through the material. We sold a lot of Paramo kit to Gamekeepers and the first thing they did was to wear them under their waistcoats. This isn't the way to wear them, and the waistcoat will push water through them. The same if you sit down in their trousers. You will get a wet arse. For walking or standing in torrential rain they're excellent, provided they are the outermost layer. Wear them sort of loose with an underlayer like a wicking shirt, or if it's cold with a mid layer like a fleece and you'll never feel the rain, but as soon as you press them into your body the water will seep through.
As for the company, well, they're environmentally conscious, and the Halcon is advertised as a "birdwatcher's jacket" . I don't know about any links to Packwit, but I honestly don't care. I'm buying a jacket that works from a company that cares about the world we live in. I stay dry in some of the most awful weather you can get in the UK, and I've no political axe to grind with anyone who genuinely cares about nature and the environment.
I own no less than five Paramo jackets, a Venture Smock and a Quito cycling jacket, a Halcon for shooting and stalking, an Alta for long days walking, and a windproof smock for dry autumn days. I wouldn't buy anything else. I only own one pair of their trousers, and those are strictly for walking.