There is unplugged bootleg of gn'r just at some shows erm KOHD medly with Imagine I think I haven't heard because I cant get hold of it they never did MTV Unplugged by the way
They actually play Imagine with Patience. They did an acoustic set for many of the shows at the end of the tour in '93. I know they play acoustic sets for both Argentina shows on july 16th and 17th.