Meh. Creatine works, the last time I looked, by forcing water into the muscles, making them look bigger. It doesn't actually grow anything - although I'm happy to be proven wrong. As for the rest, also meh. Some people swear by supplements, others do just fine without. I'm convinced that a lot of supplemental use is marketing hype with little scientifically documented support to justify the claims. That said, whey protein is just another form of protein intake - for me, it's cheaper and easier than actually prepping real food. Is it the best thing ever for me? Probably not. Is it protein I can ingest without making a mess in the kitchen? Abso-freaking-lutely. As to whether or not it will take longer, I dunno. A lot of factors come into play - age, genetics, gender even.