State of Derpcay YOSE on Uplay asked me to log into Steam when I tried installing it. But for games like Ass Creed and Tom Clancy, I'd suggest owning them right on Uplay.
And I don't

s with Gatorade. Brawndo is the thirst mutilator.
What's nice with YOSE on Uplay is: you can just use Steam. Never need to download and install from UPLAY.
I pretty much took the YOSE key from my UPLAY account, activated that key on Steam, downloaded the game from Steam, play the game from Steam. Never have to deal w/ UPLAY again for YOSE.
But, yeah - 1st party Ubi titles are fine to have on Uplay, since you skip the Steam-version double-client Steam & Uplay whammy entirely and especially since UPlay versions can often be had for much cheaper...since often Ubi prices up Steam-versions b/c they've giving Steam around 30% or so of each sale. With UPlay versions, no cut goes to Steam.
Only thing that sucks for owning Uplay titles only there - just like most services, they're horrible for their community tools. Steam's Community and Features tools for screen-shot taking and whatnot is tons better.
EDIT:
UPlay sometimes sells games that aren't based on UPlay. Pretty sure SoD:YOSE is only sold in either Steam or Microsoft store variants.
YOSE currently only comes in Steam versions for the PC. Thank God, since I don't really care for Windows Store versions of games; those can have issue w/ downloads, installs, moving the game-folder, accessing the game-folder, and stuff of that sort. Until they revamp, overhaul, and/or fix their W10 Games System, I don't really want to buy any W10 Exclusives over there, unless it's only there (i.e. go see Gears of War 4 and Forza games).
Checked the Windows Store and no PC version of YOSE is there; only XBOX. It's not a Play Anywhere title (i.e. play on Windows 10 or XBOX One).