I'm NC35 and the MA applied some on my cheeks today. It showed up well enough, but she didn't blend it in, more like brushed it on, almost like swatching it on my cheeks with a 187! I blended it in when I got home and it's showing up still, tho not as harsh or like a splotch on my cheek. I do plan on using it over Sunbasque, tho, if it doesn't show up as well as I'd like. If I have time I'll post the pics I took today of my fotd, not the greatest (pic or fotd!) but at least you can see (a bit) of the contrast/splotchiness.
*edit* Actually, have you ever tried your So Ceylon wet (i.e. wetting your brush, not the precious MSF!), or swirling your 187 into the MSF to pick up more product?