American Express Membership Rewards - Centurion at YYZ

Have any non-Canadian cents had experience of fast track/maple leaf - the banner ads don't seem to have small print about Canadian issued but who knows?

Despite the unpromising title there is some relevant discussion in this thread:

http://www.flyertalk.com/forum/american-express-membership-rewards/1096585-lounge-access-costco-amex-card.html

and also here:

http://www.flyertalk.com/forum/american-express-membership-rewards/1251939-obscure-amex-plat-benefits.html

Thank you MIA,indeed that was unexpected! Thanks. Just realised that I'm transitting so won't need fasttrack hopefully but good to know for the future.