Well, I'm not sure even the notorious Canadian politeness extends to letting people pinch your headgear...
So failing them, try the British Boy Scouts and British Girl Scouts (an early splinter group from what went on to become the Scout Association)
Linky to a news item about buying hats:
http://bbsandbgs.org.uk/news.php#ni3. Use the Contact Us page to order one. I got an email from the head honcho, who sent me a pro forma invoice. Bank transfer and the hat arrived a couple of days later. The hats are made by Olney
http://www.olney-headwear.co.uk/ but they don't seem to show them on their website, so it might be an exclusive deal with the BBS. The Scout Association also do a lemon squeezer hat, but it's
rubbish not very good when compared with the BBS one. The hat band is thin pvc (despite the website saying it's leather) and it felt like a toy.