I can read music, but usually don't.
Most of the time if I have to rad music it's at a gig where I don't know the tunes, so I get a chord chart from the band leader. But I haven't had one of those in a while.
I rarely read the heads of songs, or have to read specific arrangements. Reading is pretty hard on guitar (not an excuse, but still...) and I just haven't put enough time into it.
So usually I just play what sounds good. At least when I'm jamming.
When I practice I tend to be a little more focused.
Does anyone else here try to separate practicing and playing?