Trigger level 20 Stance Swap when Attack with Perforate or Lacerate" - for everyone wondering here is a quick video. Yes it just swaps your stance when your Stance skill is not
POE 3.7 Berserker Perforate Day 1 - YouTube
Perforate Build (Budget Bleed Gladiator) | Path of Exile 3.7 Legion League - YouTube
3.12] Perforate Gladiator: DW Max Block | 90m+ DPS | Boss Destroyer! - PoE 3.12 Duelist build - Build of Exile
3.13]Champion Perforate+Bladestorm| 2H Impale | All Content Starter viable|POB | Videos - PoE 3.13 Duelist build - Build of Exile
Perforate vs Drox, the Warlord ft. The Saviour | Perforates everything in secconds : r/pathofexile