I would like to comment on a few things about this thread.
Impressions - I really do feel you're correct. as a fellow jazz (trying to be) guitarist, I share the same feelings about the subject.
and I'll allow myself to quote from Horace Silver's book (which I charish every word in) -
"Have yo dedicated your life to music? Have you dedicated your life to jazz? if you want your name to go down in musical history as one of the greatest musicians of your era, you must dedicate your life to "the" music. If you wish to make jazz and improvisation your forte, then you must dedicate your life to it. You must become wedded to this music. It must come first - above and beyond all else! with this kind of attitude and perseverance, your success will be assured. There will be mountains to climb, but with your aspirations to succeed, those mountains will be surmountable".
Tuck Andress is a great, impressive guitarist. His style and technique reflects alot of great guitarists who came before him, with alot of his own technique and unique harmonization.
Nine tenths of jazz playing is improvisation. For this, gaining a profound harmonic musical background is essential. You NEVER master harmony. Regardless of how many years you have studied it, or continue to study, there is always a new combination of sounds or notes to delight your ears once you have discovered it. Harmony is like eternity and Infinity- we live in it, and we know it in part, but we never come to know it completely. There is always more harmony to learn. There are infinite ways in which to combine notes to bring forth beautiful sounds.
Therefore, I don't think any teacher will "teach" you to be Tuck Andress, or Pat Martino, Kenny Burrell or Barney Kessel.
It's all up to you.
Think about it, mate! =)