I rip it as well...... For two reasons. One as backup, two for compatibility and pre checks. If you hand me a cd and say " this track " and I go to play that track and it's the wrong one, or the cd player doesn't like the cd, the jig is up. If I rip it, I can play it offline, confirm song titles and check for errors or playback problems.
I, being as professional as I can be. will swiftly delete the files from my computer. Two reasons for that. One I don't really care to have said artists backup tracks, as it does me no good and wastes space on my HD. Two........ If I am ever accused of leaking material, the information will be so long gone that when I suggest they take my computers to see for themselves, even the best puter sleuth there is will know and realize I never leaked it.
Most of the time when in a situation like that, the manager or personal assistant will be there to direct if their own payrolled BE/SE is not there himself. I have had many an occasion where they show up with a cd and leave it........ Others have simply showed up with an iphone.......