rkmancer:
I have been using the standard TMWA (aggro-control) for quite a few months and you are right about how it keels over and dies to random scrub decks. However, I have had a ton of success beating oath with it. My deck runs both swords and hide/seek in the main deck, which are backed by a few pyroblasts (maindeck). Since you expect your opponent to side in SSS against you, you just have to have a backup plan in your sideboard. I run 3 edicts in the SB. Now the matchup comes down to playskill. DONT use hide on oath unless it is absolutely necessary. dont play creatures early, waste orchards, use seek/swords/edicts on creatures. I dont run them any more, but mishras factorys helped the matchup too. You might run into some problems playing against stranger oath decks like tyrant or the one that uses DSC.
Oh and one more thing, I dont run mancers. Gorilla shaman is way better. You said that the deck would be "unemployed" against a chalice for 1 or 2, but it has answers to both of them. Gorilla shaman loves to eat chalices! if you cant get him down fast enough you always have hide to fall back on.
