Yes plated bullets are common in the reloading world. It is a matter of opinion which to use, typically the price vs very little difference in performance compared to jacketed bullets is appealing for some. In my experience the plated bullet manufacturers have become a bit too proud of their products and their price points have exceeded some jacketed bullet prices. Take a look at www.berrysmfg.com
for the plated bullets that your friend recommends and then compare to either of the following jacketed bullet distributors and decide for yourself what works for you...