Since voting probably starts soon, I will be stating my opinion on this ancient fish. I, without a doubt, am also on the bargin of banning Dracovish. From the start, Dracovish has slowly been getting recognition. Even with it's drawbacks, such as it's low speed making it a "hit and run" Pokemon more than an actual sweeper, it is possibly one of the best breakers that has intrigued the OU metagame.
Regardless of what Pokemon you use to stop Dracovish from breaking apart your team, whether it be a Toxapex, Ferrothorn, Seismitoad or some other unviable Pokemon or water absorber, there is no denial that Dracovish potentionally limits and restricts teambuilding. If Dracovish gets an advantage over your Pokemon, you will either have to sack it or switch into a check only to possibly get hit with chipped damage. As Dracovish only usually relies on clicking Fishious Rend, it can always suddenly predict your switches at the same time.
Not to mention that Dracovish is completely viable in the Ubers metagame as well, with and without rain. This can, in my opinion, further increase it's chances of moving up. Now, the difference between Choice Scarf and Choice Band gives off different perspectives of this Pokémon. Choice Scarf is just used to help outspeed a higher number of Pokémon, whilst Choice Band is an overall better breaker who sacrifices its speed. I will say that I highly prefer Choice Band over Choice Scarf, as it is what Dracovish is supposed to be; powerful. If you can't outspeed a Pokémon and kill it, then you should probably just switch out, hence why I call it the "hit and run" Pokémon.
Not much else to say as lots of people have already been discussing in this thread lol, but I saw some good stuff. BTW, using Freeze Dry Kyurem on Dracovish actually seems skeptical, as it is unexpected whether it's scarf or banded (unless you figure it out during the battle, of course.)