i only got 3 ps3 games so far (naruto, siren, ridge racer7)
and only tested about the eject working... and the results are:
naruto (even with hdd installation) - 'please wait...' box and back to xmb
siren - 'please wait...' and back to xmb
ridge racer7 (with hdd installation if i remember well) - continues playing the game, goes game menue etc etc.
so the reason for the old games seems that they're just able to continue playing when you eject the disc... guess it has been discussed already tho
nope clonecd cant decrypt anything... but its prolly more like you're getting proper images with clonecd/alcohol/daemontools than by using the raw method in linux.