I haven't had a chance to use mine too much yet but if you're not nuts about everything being super light weight it's a good solid system.

I've frozen water in the cups and canteen and ice doesn't bother any of it in any way as it's extremely sturdy. I've also tested to see how long it takes for water to freeze. In the bag and inside all the cups in the system it takes over 5-6 hours from room temperature for the water to even begin to ice up at -20C to -25C. I guess there's just enough dead air to keep things warm. I've been tempted, since there's some room in the bag, to line the bag with foil bubble wrap and test again...not really needed though. 6 hours is plenty IMHO.

The stove I've found is very versatile. I carry a modified Vargo titanium alcohol stove inside the cooker at all times and a 4oz. bottle of fuel (good for about 3 fills) down the side of the carrying bag along with some matches and my MIOX pen.

I've tested the cooker with Esbit style fuel tablets and they work really well but are more messy than the alcohol.

I've also tested using the cup in the bottom of the cooker (there I imagine to retain the goo that can melt off of Esbit style tablets) as a tea light cooker filling it up with alcohol and lighting it as is. It works but is WAY less efficient than the stove. Dropping some fuel down into the cup when using the Vargo helps prime it in super cold temperatures at the cost of some extra fuel. It's worth it because there's no relighting an alcohol stove when it's really cold. You have to refill it and go again.

No matter what you burn, the cooker does a good job of shielding the wind out though I recommend keeping the low 'notch' in the front facing you as that's the only place a gust can really get in.

I also intend to light a twig fire inside of it one of these days and try to boil water Kelly Kettle style...not sure how well that's going to work but if it does, it's going to be an incredibly versatile system.

I carry just the cooking cup and stove in my car BOB with Esbit style tablets and store bought bottled water. It was just a happy coincidence I had two of each to do this with.

The cooking cup only holds about 2 cups of water which is my only real beef. For melting snow it's a bit inadequate but since the alcohol stove is as well I've been tempted to carry the canteen, leave the cooking stuff at home for winter use, and use a more appropriate pot and stove. That being said, I've found it to be perfect for freeze dried entrees as they typically require 2 cups of boiling water be added. I've also reheated Eaterz boil in the bag entrees with it...a bit of a snug fit but the food got warm enough by the time I was out of alcohol in the stove.

You can also buy a hanging handle to suspend the cooking cup over fire but I think just setting it in some hot coals is more effective and secure as the surface area of it's bottom isn't huge and the hanger isn't super secure...guess it depends on what kind of fire you're working with at the time. I carry the hanger anyhow since it weighs next to nothing.

The other thing that might be an issue for me in the summer time is that the strap on the BestGlide carrying bag is very narrow. In winter it's not a problem as my shoulders are well padded but in summer I may have to replace the strap or supplement it with a pad. If I'm on a short day hike I'll carry it just the Crusader system and my MEC shoulder bag and I'm pretty much good to go all day.