If I had to choose one, I too prefer the Double Row pave. I have not seen this collection in real life, but on the model, the ring looks delicate and dainty so you could certainly wear Perlee Pearls of Gold as well.
However, I would not stack it. I think if you want to wear both rings at the same time, it will look better worn on different fingers.
Here is why...
The Knot does not have flat edges like a standard band ring (e.g. Perlee Pearls of Gold is a standard band ring).
The Knot design is an asymmetrical look which is the beauty of this ring. That asymmetrical look makes the ring. The visual for that ring to me is "a string on your finger, tied into a knot"; a very clean and crisp look. To me, you want the ring to stand out on its own. However, if you stack the Knot and hide the asymmetrical edges, it loses the effect. When the Knot ring is stacked next to another ring, it just turns into another flat band ring piled on to another a stack.
If you want to wear Perlee Pearls of Gold at the same time, I think you could wear it on a different finger. These rings are delicate enough to wear two rings on one hand without competing. I think the designs will compliment nicely. The Knot ring is rounded/tubular metal, not the typical 90 degree edge band ring. I think this rounded/tubular edge compliments the rounded Milgrain bead edges. When worn together, I also think the Knot will make Perlee Pearls of Gold appear more contemporary. Perlee Pearls of Gold has a tendency to look a bit classic given the Milgrain bead look. Milgrain beading has been used in jewelry since ancient times, a very classic "old-world" look which I love, but you don't see it used often by the other houses (e.g. Cartier, Graff, Tiffany). I think the two together on separate fingers will create a nice look... kind of flowing together... round tubes, rounded beads.
That's just two cents, and of course, everyone has preferences. I hope that helps.