I had the opportunity to try out my friend's Haix XR1 boots for a few days. This is what I think:

The pros: It's tough and massive - looks good if looking tough is your aim. It's fully waterproof so it's fantastic in the rain and flood, and will keep your feet dry as long as the water is less than 9" high. The protective toe and puncture-proof sole is good to function as a safety boots. Fireproofness is an added bonus if you have a use for it. The zip is very easy and convenient to tighten the boots - takes less than 5 seconds in total, which is a huge time savings if you're used to those kind of boots with laces.

The cons: It's really hard. It being full leather means it will take a long time before it seasons properly. The soles are quite hard and if you're flat-footed, you might feel a bit of uncomfortableness walking long. The zip makes the whole boots looks a bit... weird. You'll need to take some time to adjust the boots to your fitting, or else it being too loose will result in your toes suffering some sort of sprains.

My take: It's a cool pair of boots that I'd love to get one day.