Nah, Sneasler has consistently not been tearing up any of the Post-HOME OU roomtours I've participated in and/or watched (all of them have been in Tours Plaza for me; I've only heard of but never seen a single OU room one), even though we let it play with Dire Claw. In fact, teams with zero HOME-only mons have won more than half of these post-HOME roomtours. At the very least, Skeledirge burns it up, Gholdengo forces out Night Slash and lives one and smacks back hard, Dondozo Rest-Talks past nonsense, and Dire Claw doesn't proc often enough. (50% odds generally trigger less than half the time for me - Wonder Skin never seemed to trigger for me at all on Sigilyph in Gen 8 The Loser's Game despite targeted status moves being absolutely everywhere in that OM, to the point that Gholdengo has been miles better as a Trick/Taunt/etc. hoser in that OM simply because Good as Gold triggers 100% of the time.)Sneasler is going to break the game when it gets released, it will see OU for a week before a quick ban.
On two other post-HOME notes:
Enamorus somehow hasn't been broken, either. While maybe part of it is my Mixed Contrary Lure set investing too much in Earth Power and not enough in physical attack, another part of it is that even my arguably smarter opponents running Choice Specs or Boots Special Attacker Enamorus haven't been able to circumvent Enamorus's only decent 106 base Speed and mediocre bulk. Scarf Enamorus players might actually be playing with the best set, but taking 25% from Stealth Rock hurts and you lose out on calcs like these:
252 SpA Enamorus Earth Power vs. 248 HP / 252+ SpD Skeledirge: 176-208 (42.8 - 50.6%) -- 1.2% chance to 2HKO
252 SpA Enamorus Earth Power vs. 0 HP / 4 SpD Gholdengo: 218-258 (69.2 - 81.9%) -- guaranteed 2HKO
(Gholdengo OHKOs back with no-SpA-investment Make It Rain, Specs Earth Power is a guaranteed OHKO against offensive Gholdengo)
252 SpA Enamorus Earth Power vs. 252 HP / 232+ SpD Heatran: 288-340 (74.6 - 88%) -- guaranteed 2HKO after Leftovers recovery
(Heatran guaranteed OHKOs Enamorus back with no-SpA-investment Flash Cannon after Stealth Rock, Specs Earth Power is a guaranteed OHKO against Specially Defensive Heatran)
252 SpA Enamorus Moonblast vs. 0 HP / 0 SpD Hoopa-Unbound: 254-302 (84.3 - 100.3%) -- 6.3% chance to OHKO
(Hoopa-U guaranteed OHKOs back with no-Atk-investment Gunk Shot or 252 SpA EVs Speed-boosting nature Thunderbolt; now Scarf Enamorus wants Play Rough instead, but that performs so much worse against Great Tusk)
Heatran has been pretty unpopular in these post-HOME roomtours in my experience: not a single one of my opponents used Heatran, a ton of the winners haven't used it either (again, I emphasize that teams with zero post-HOME mons have won more such roomtours I've seen than teams with at least one), and Heatran matches up shockingly poorly into the premier Fairy-types this gen (Iron Valiant and Enamorus; contrast Heatran eating up Clefable and not doing too badly against Tapu Koko and Tapu Lele in Gen 8). Compound that with people still liking Rain and wanting to experiment with offensive Water-types (including Samurott-H), and Heatran may actually be justifiably taking a hit this gen.