You are correct Balkanhawk (funny name, in the balkans this discussion highly relevant).
Performance class B aircraft have relaxed performance requirements in take off and as it seems, also in go around. With this in mind, most things will be legal but I would seriously question going into lets say Sarajevo in !!!!ty weather and going below the 2.5% minima. If it doesn't work out and you net to get yourself out of there, it's a long way up to MSA if your flying a piston twin on one engine...
But that was perhaps not the question. Anyhow, take care.