Davy always had a nylon string guitar around. When I first met him the only instrument he had was a cheap Hohner classical. He'd been burgled some years before and it was all he had been able to afford. It was an awful instrument. He loved it.
He said that the Nylon Guitar should be seen as the feminine instrument and the Steel Acoustic as the masculine one. We bought some better classical guitars at the time but they didn't swing as well as I'd hoped. Davy didn't care much as he was more interested in his classical and untempered studies in any case.
Later; too late in fact, I discovered that a flamenco nylon string guitar, as a folk instrument, would have been much better for him. All DG's nylon stuff on the seventies albums had been done on a Ramirez Flamenco guitar. Duck Baker uses a Manuel Rodriguez flamenco guitar.
The classical technique and melodic and harmonic principle combined with the folk approach
is what Davy left to all of us. I still think its the future of music that people will want to listen to. The trouble is its hard to achieve!