I would easily take 70mm canvas over the Duraline. I find the canvas far easier to use, more flexible, less slippery when wet and it rolls far better than duraline in my experience
In terms of firefighting tech, SA has some great stuff, but is lacking in other areas. NSW is still 'trialling' MDT's - Go figure. If there was more caring and sharing between fire services Australia wide, we would certainly see vast improvements in firefighting technology overall.