I'm gonna be fundamentally in favor of full-powered .30 caliber anything so it looks good to me. The H&K clone design wouldn't be my very favorite choice but I certainly wouldn't be adverse to owning one. My single big experience with the design was with the Century Arms CETMEs that a relative and a friend of ours got into some 6-8 years ago so that may not be valid judgement.
The rifle's maker is way off base if they think that nickel treatment looks like a "throwback" to any 19th century nickel plating work or like any 18th century bright metal (which is what Revolutionary War arms actually featured rather than nickel) for it resembles neither. Despite this, I think it looks sharp with that finish it's sporting, and I'd own it. Might not be as practical as flat black "tacti-cool" but I'm not a tacti-cool kinda guy so the finish on the rifle appeals to me as a stand-out in a crowd. I'm "bored out of my gourd" with black rifles.