Harv's question apparently answers the one I asked a while ago..."Can a 'verboten' app be installed by disabling and subsequently re-enabling Rootless?"
I don't think I'd do it for SIMBL, which has had something of an unsavory reputation for years, but I was wondering about Xtrafinder, which seems to be benign.
Does you know if Little Snitch and AppleJack run into issues with Rootless?
