In House Of Quark we see a guy who abuses the assumption that he is honorable in order to steal somebody's land with underhanded tactics.
In season 7 Ezri says "Screw the Klingon Empire, it deserves to die" and proceeds to prove to Worf that he's pretty much the only Klingon in the universe who still gives a crap about honor.
I think some of you are missing the point of the Klingons. The Klingons in the high council like Gowron don't care about honor, they only care about being perceived as having honor. That is far more three dimensional than just having a few Klingons hanging around who choose careers other than being a warrior.
Pretty much the entire Klingon arc starting in Sins Of The Father and leading toward the end of Gowron was about how the Klingons in fact do not actually care about honor anymore.
This. DS9 expanded the Klingons by exposing their honor blather as sometimes - not always - hypocrisy. And some of them were willing to admit it in public. Betcha a lot more knew it and didn't admit it. That's just not done.
Worf is probably the truest Klingon, following the honor code and traditions of Klingon culture more devotedly than any Klingon of the Empire. He was basically uncorrupted by the true nature of Klingon politics.
Worf is a very unusual type of Klingon since he was raised by humans and overcompensates by becoming what he thinks of as an ideal Klingon. "Real" Klingons must think he's a nutcase.