I hope its not the newest trend that we only get armor parts in the set and no matching accessoires / weapons.
But hey… if something is working 100% its the ingame shop. 
Sorry, no more moneyz from my side.
They are priced differently.
Those which come with weapon skins often don’t come with back trophy and the matching trophy is sold separately.
Your are right. I did not recognize the backpiece.
BTW the back trophy on the new Rogue Vitreous skin is the biggest compared to the rest of the set.
My rogue is running around in a composition of 4 sets. If the team brings good content and itemization i will support them again.
They can rearrange the deck furniture all day but we all know how the titanic ends.