Quote: there isn't a variety known as 'black laced. there are silver and gold laced, both of whom have black lacing, and then there's blue laced red. which may come in black blue or splash lacing...
and yes, if you're breeding FOR blue laced red, the only reason to incorporate a gold laced would be to improve type. it would do NOTHING for the color. but you can breed the gold out within a few generations. using a blue (or black) laced red on a gold laced line, you're probably going to regret, since I have yet to see many blue laced reds with the type and quality of many of the gold laced lines. they're out there, but not in abundance. again it would take a few generations to get rid of the mahogany gene if you did.
and for the initial question, 2 gold laced can NOT produce a blrw, since the mahogany gene is dominant, at least one parent would need to show it.
the roo pictured above is a black laced red, to be used with blue and splash laced reds.
if someone says blue laced, black laced, or splash laced, they're referring to the blrw's... any time someone says 'blue' in chickens, black and splash are automatically presumed to be part of the lines as well, since breeding 2 blues will produce all 3. only black or splash will breed true, and will never produce the other.