I have the same book sort (with the cloth binder not the tacky plastic thing) that 18Wheeler has and a plastic CC type.
I prefer the convenience/portability of the CC type but like the listing of qualifications in the old book type.
The CC type is bloody convenient. Leave it & my medical in my wallet & I'm never caught without it. It would be better if it had small print on it that lists ratings though. Cheap enough to do. If Walt Disney can use them for park tickets I can't see why CASA can't do them cheaply.
I also have a UK licence. It's a bloody awful thing. I suspect the new Oz book licence is similar. It's too large to fit in a shirt pocket so must be carried in something and the print comes off the pages onto the plastic inserts. Space is wasted on every pages due to the desire to have a separate A4 pages for each different section. Typical JAR crap...
My US one is also conveniently wallet size. Guess why it ALWAYS happens to be with me when I fly?