For most L/F photography movements are over rated. Don't let lens snobs talk you out of any lens. Test for yourself. Hang around some workshops and you will meet plenty of guys with a bag full of thousand dollar lenses.
How come they always show their lenses and never their prints?
That's a rather glib comment, I use both a field camera and Speed/Crown Graphics and it's the poor & limited movements of the Graphics mean certain images that would be easy with my Wista and movements just can't be made with the Graphics. It's not the Tessar/Xenar 135mm lens.
Having been on quite a few workshops and run some too I can't ever remember people showing off their lenses, in fact only prints were ever shown & discussed.
I have one too. Mine's a Schneider Xenar model from a late model Crown. I did some lens testing a while back and this Xenar kicked the @$$ of some modern day multi-coated lenses.
Last year I tested three 135mm/150mm Tessar's (1920's, 30's & 50's) and a modern late 150mm f5.6 Xenar (new around 2006) against an f5.6 150mm MC Sironar and an f5.6 135mm MC Caltar (Symmar). The Sironar & Caltar were vastly superior in all respects, over the Tessar's but the modern Xenar wasn't too far behind once stopped down , and at f22 results were indistinguishable.
I used a 60's 150mm f4.5 Xenar commercially for many years and it never let me down optically, but it was was always used at f16/f22.
A 135mm Tessar or Xenar is fine used carefully on a Graphic with it's limited movements but inadequate on a field camera, the 150mm Tessar/Xenar has better coverage and edge/corner sharpness on 5x4 and I now prefer to use them on my Graphics.
Ian