Roger, we do get plenty of bad weather in the US! Try visiting Wyoming's Wind River Range sometime. You're mostly above timberline, often with daily thunderstorms, high winds, occasional snow. If you're lucky you can shelter behind some krummholz or perhaps a few boulders, but most of the time you are out in the open. Unlike many other places along the Continental Divide, it's often not possible to drop down to timberline to camp, and because of bark beetle infestation you usually have to camp in the open even below timberline. The Wind River (which flows from these mountains) was not so named for its peaceful zephyrs! The Winds are a truly beautiful place, but you have to pay the price!
Because most people in the US have really short vacations, they check the weather forecasts and aren't out for long periods in bad weather. That may be why you see trip reports with good weather.
Even out here in relatively mild western Oregon, we get high winds out of the Columbia River Gorge due to air pressure differences between the east and west ends (it's often high pressure at one end and low pressure at the other). Fortunately, the worst of the winds are in the winter when most of us are not camping. At least one winter since I've lived here, the winds got up to 90 mph (145 kph) and blew down a lot of billboards along the nearby highway!
If something that we can buy comes out of the commercial interest in your own tent, it will be anxiously awaited!
Re clips vs. sleeves--at least one US tent designer (Sierra Designs) went from sleeves to clips for its most popular tent (Flashlight) in the early 1990's because it was so much easier to clip the inner to the poles than to thread the poles through the sleeves. I suspect the popularity of the Clip Flashlight (which I personally hated for other reasons, especially horrendous condensation problems)) spread to a lot of other tents from the big manufacturers and explains the prevalence of the clip design.
Many people here (on BPL) claim that pyramids are the most wind-resistant....