All he could find were these;
The pockets can take 2x2s and can take the clear plastic flips (that i was raised on). In fact i think for most of my collecting life i've used albums like that with clear plastic pages and clear plastic flips that go into those pockets. Or until 2000 i did (unfortunately i had cheap pages with PVC... bad move). Then i switched to the mahogany cabinet method and never looked back. I've grown very suspicious of 2x2s and plastic flips ever since. I only retain them for shipping coins out.
Dealers seem to make use of the album system too (especially for any World coins they have), but from my experience at coin fairs the vast majority use this system;
The usual sight at UK coin fairs is piles and piles of coin trays lining the tables stacked on top of each other, good fun to go wading through. I know Andy uses this method. If you can count more than half a dozen slabbed coins at the whole fair then it's unusual. All the coinshops i've ever been in also use trays as well. The occasional album as above crops in here and there.
Collectors using long term storage often opt for the method below, the British museum maintains it's vast collection in this manner, and it's a firm favourite with the hammered coin collectors;

