Yasuyuki Matsukawa, CCIE #23536
I passed my CCIE R&S Lab Exam in Tokyo on Monday 16 Feb, luckily that was my first attempt. For preparation I used your IEWB-RS-DYN Vol2, Mock labs 2-4, Dynamips, some Cisco Press books, and CCO. It took me about 10 months to prepare. Strongly recommend everyone use IEWB, it's tougher than the real Lab so you would've been well prepared if you went through all the WB Labs.