2 adjectives to describe sketchers

" I accepted the stool he offered,a canvas one, made to "unship" and fold together,such a patent accommodation for tired "hurdies" as amateur sketchers and promiscuous lovers of the picturesque in landscape take with them on excursions.

A fine critic, a vivid sketcher of character, and a writer of singular clearness, point, and eloquence was spoiled to make an artist, sometimes noble in conception, but without sense of color, and utterly inadequate to any but the most confused expression of himself by the pencil.

2 adjectives to describe  sketchers