If people buy it then it gets made and Giles will stock it. They definitely moved slowly last time around, but I do think the growth of the brand in the US over the last few years will be a decisive factor here, so the time seems right to try again.
As for being thankful for IH, I feel you. Yes it costs money, and can be a serious drain on the finances, but I too appreciate being able to buy and wear clothing that works for my climate and lifestyle, that become a fixture in my life. It adds a whole new layer of meaningfulness to the prosaic activity of buying clothes and getting dressed in the morning.