Isn't it on October 20th? I may be mistaken, but I remember it being much "closer" time-wise.
Anyway, I think I have a love-hate relationship with this set of changes (and i'm pretty sure i'm not alone here): on one end, blasters don't eviscerate you anymore even if they are miles away from you, you don't have to worry about rollers "caressing" you with a single gravitational drop of ink and splatting you anyway, and repelling the Kraken with a gal is probably much easier; but on the other one, 75% of my main weapons got the nerf hammer (Dynamo why D; ).
In the end, if this will help stabilize the metagame and promote the use of different weapons and strategies, so be it. Nobody likes a stale meta, as Pokemon clearly taught us.
Regarding any actual winners, I agree that squelchers and the elite splattershots are probably the ones that benefitted the most, with their main rivals getting all the nerfs (.96 gal deco, regular .52, tentatek), while splatterscope is now less overshadowed by the e-liters. Rollers will probably see a huge decrease in popularity (especially Dynamo), while Blasters will require a more accurate aiming.
.52 Deco is now the best gal y/y