I've heard only a tiny handful of demos where the player got anywhere NEAR nailing a good distorted guitar solo. Good enough to fool an arranger player, perhaps

Not good enough to fool a guitarist, though!
There is simply too much interaction between the notes played and the amp on 11, pick angles, feedback and force and cleanliness (or lack of it!) of fingering for a keyboard to really nail it, IMO.
To be honest, I find the 'clean' acoustic and electric guitars, especially SA and Mega, to be FAR more convincing (if played well) than any distorted patch, I'm afraid...
JMO
It's nice to pretend, but we are no more Jimi Hendrix than we are Stan Getz!