No i wasen't. I took the vCloud I/C/M class at PEX2013 (required for our IAAS competency)
My collegue took the design class last year at PEX and i simply borrowed his class manuals for my study.
I actually did not find that material that great (unless you don't have much general san/system design knowledge, which i have been doing for many years)
Still worth it, but peolple must not rely on that material alone...
Im just happy i passed the first time.... 400$ for the exam is expensive.