Something relatively current here:
I read in the UK Box Set booklet that Holdsworth disliked playing to larger audiences, "anything above a few hundred people he was clearly uncomfortable with". That of course collided with where Jobson and Wetton wanted to take UK, hence Holdsworth's departure after the debut album.
I liked his fluid, spheric sound, never a shredder, he had the knack of playing guitar as if it was a Fender Rhodes.