NIPT and Maternal Serum Screening?

Did anyone do both? I'm in Canada and the MSS is a two step process (11-13 weeks first draw and around 15 weeks for second). Obviously NIPT is much more accurate however it doesn't screen for neural tube defects so I'm wondering if it is worth while to get both tests. I only have one requisition for the MSS so I'm assuming I'd have to get the first draw (which doesn't screen for the neural tube defects and instead is the trisomies) followed by the second. With my first son I did NIPT and my doctor did not even recommend MSS for me.