Down and Welded - I don't think the Aircraft will actually take off on one engine - I would be surprised if it actually could (mabe?). You can't set full power until Vmcg and even then it's an iffy operation (how do you calculate TODR ??) that is patently unsafe at an Airport in an urban area. More likely an engine will be shut down sometime after passing MSA and complete the flight on one engine from there.
I have heard stories of BN2 pilots performing SE takeoffs in PNG when empty but that is a completely different kettle of fish!