Re:
Yep chainline will remain the same. I measured mine before and after and it's spot on the same. They are 6mm offset chainrings to maintain the chainline. You can buy 0mm offset rings which are designed to maintain the chainline of boost cranks, although some people think the regular 6mm offset rings give better chainline with boost as well.
Well impressed with my works component ring, it's held the chain on perfectly and is an absolute bargain. Oh and has no garish logos either which was a plus for me.
For reference my SRAM spider + 32T SRAM chainring weighed 130g
Works components direct mount for SRAM GXP fitting 32T weighed 76g.