I took all my Commonwealth games 50c out of their plastic capsules which in turn are housed in the card. I put them all in 2x2s. The cards I stacked side by side in a seperate box. I did the same with plastic capsules (although they don't stack well ).
I haven't tried it with the 50 cent coins yet, but I've just started putting together a $1 album for my nephew. I have my collection in a Dansco album, so had to take the coins out of the capsule, but for my nephew's album, I'm using the 2x2s. With the $1 coins that have come in capsules, I have been removing the clear film from the 2x2 and just popping the capsule in. It does make the pages a little more bulky, but so far, seems to be working well. ............ Just tried it with the 50 cent capsules ...... a tight fit, but it works.