The checks i have used are Pursuit users like Mega-Scizor who can usually deal with it bar Will-o-Wisp/HP Fire variants and specially bulky Pokemon like Ho-Oh who can force it out/trade kills and if used on offense it is kind of a reliable way as it doesn't have many switch ins opportunities.Just out of curiosity, what are these checks you mention? A importable of your team that you used to ladder would also help abit with spreading your point. o-o
Despite people saying ubers is a banlist first, tier second, that is not the case as far as this subforum is concerned. The goal of the ubers metagame is the same as every other metagame, in the sense that we want the more skill based player to have a higher chance of winning. Whether it be a mon, move, or mechanic that makes a metagame uncompetitive, ubers will try its best to rectify that. As shown with previous suspects (testing age old clauses, testing swagger, etc) ubers is not afraid to divulge from age old thinking and do something new if the end result is a more competitive, skill based metagame. The fact that shadow tag is getting suspected shows that it was deemed uncompetitive enough in the eyes of hugendugen and presumably the rest of the ubers council, that gengarite and possibly shadow tag as a whole is a detriment of our ideal metagame. The suspect test and the suspect research tour is a way to show if that is truly the case. If shadow tag/gengarite is deemed uncompetitive then it'll be banned, if not then it'll stay unbanned. As long as it results in a better metagame, it should be done. And worst comes to worst and shadow tag was actually unrightfully banned, then I can't see the council not just revoking the ban if that's the case.
Anyway as i said i am not really that sure and on the fence on whether it should be banned or not and i'll certainly read this thread in its entirety before voting :/