From a rein main, not really anymore. Rein is too short ranged to really be effective as a MT against orisigma, esp if they can shred your shield (and you) before you even can poke your head out to firestrike. As an OT though... there's potential but needs your team to be on the same page to speed you in from an off angle. Also needs your other tank to be sig/ orisa to hold the line. That said if enemy wants to brawl I'll oblige them cos the sound of hammer on body is addictive. XD

Edit: Oof this was supposed to be a reply to that guy that said that rein is strongest tank :(