Great song! Most people don't know this but Father's Eyes was originally recorded when Clapton did the Unplugged sessions back in 1992 but they intentionally left it off the Unplugged album so that he could release it as a single on his next album "Pilgrim" (which didn't come out until 4 years later).

Any way, I had a bootleg recording of him doing that on Unplugged and when YouTube came about people started posting that version - which is acoustic, but minus the slide part. Here's a link to him playing it acoustic minus slide - http://www.youtube.com/watch?v=aFwMvlPu4Qw

I'm sure that's not exactly what you're looking for, but may give you an idea for another way of performing that song on an acoustic guitar.