I LOVE the back of that TV pattern, but I really dislike the front. I was thinking of getting it just for the back, and drafting out my own front. Let me know how the directions go!
Also, I just checked all the photos of extant garments between 1870-1876. Out of about 3,000 photos, I'd say 80% of them had piping in the shoulder seam. I'd vote you do it.
I'm currently working on a few bustle gowns for myself (a cotton practice one, a cheap silk practice one, and the expensive silk one), plus 4 other bustle gowns for an 1873 wedding in May. Every dress they picked as inspiration had piping, as did the one I'm reproduced, had piping on the shoulder seams.