I had severe windshear in the 200 during an ILS. It was worse than anything I have ever been given in the sim. We firewalled immediately, like we are trained, and the plane continued to descend. The plane leveled at 900 feet with our nose pitched up and still firewalled. After riding this way for about 10 seconds we shot up at 4,000 ft/minute just like in the sim.

I have a few type ratings as well and it has always been firewall during a windshear escape.