This phrasing is good and effective, especially if the artist changes at once to the sombre quality after the pause, and finishes the phrase piano and rallentando.
"Style in Singing"
W. E. Haslam
Soon this is worked up to a big forte rallentando effect, which leads into the last theme, pianissimo to begin with, getting quicker and quicker and more crescendo to the coda, which is presto fortissimo.
"Shakespeare and Music"
Christopher Wilson
Aside from a few rallentando places, the etude is to be played strictly in time.
"Chopin: The Man and His Music"
James Huneker