I read an article recently with BB King who was saying he had had many "Lucilles" over the years, and changed guitars frequently but when he listened to the recordings realized the sound never changed and was him not the guitar itself.

Incidentally I remember seeing BB King live in Melbourne, Australia almost 20 years ago and his tone was much better than I had heard on his recordings so don't consider his recording to be entirely indicative of how he really sounds. BB King is a gentleman and a true artist. He pulled the best sound from a Gibson ES-335 and Fender Twin Reverb than I have heard before.