McCutcheon's gentlemen affect...?

Hi~
Here is a sentence I coundn't figure out what it means. Writer like to give a sarcastic twist...1910s, in a parlor of a boarding house...
A main man was gazing at some pictures, etc...

And, on an easel, the sad portrait of a gentleman, undoubtedly the late lamented Norton. His
uninteresting nose appeared to turn up at the constant odor of cookery in which it dwelt; his hair was plastered down over his forehead in a gorgeous abandoned curve such as some of the least sophisticated of Mr. John T. McCutcheon's gentlemen affect.
Mr. Magee stared round...

I can hardly understand from "...gorgeous abandoned..gentlemen affect."

I searched the Mr. John...
John Tinney McCutcheon (May 6, 1870-June 10, 1949) was an American newspaper political cartoonist. McCutcheon was born near South Raub, Tippecanoe County, Indiana to Captain John Barr McCutcheon and Clara Glick McCutcheon. He graduated from Purdue University, where he became a member of the Sigma Chi fraternity, in 1889 with a Bachelor of Science degree. At Purdue, he worked with typographer Bruce Rogers on the student newspaper and yearbook. There is now a dormitory at Purdue university and McCutcheon High School, in Tippecanoe County, Indiana, was named in his honor.

He worked at the Chicago Morning News later called the Chicago Record and then at the Chicago Tribune from 1903 until his retirement in 1946. He was awarded the Pulitzer Prize for Cartoons in 1932. Often called the "Dean of American Cartoonists", McCutcheon died June 10, 1949 in Lake Forest, Illinois. He was the younger brother of novelist George Barr McCutcheon, writer of the once popular "Graustark" books.

You can see his portrait and some of his works here,

http://www.lib.purdue.edu/spcol/exhibits/mccutcheon/

Please give me some information...
It seems last maze to me.
Very thankful to you...
Donghoon