After showing the nightie to my sister, placing skein after skein down and asking, "What about this one? What about this for a trim? What about a trim made out of this?", she said that the Berroco Suede would probably look best because it's matte, whereas the yarn I used has a sheen to it. So it might be a nice contrast combo.
I've got two colors of Suede in the stash. Light purple:
And dark purple (which is noticeably thinner than the light purple. I think the dark one is one of Berroco's first iterations of Suede, which is why it looks so different).
Which one to use?
To be honest, I like the darker color better but the lighter one is closer to the gauge I want. But then again, maybe it would be better to knit thinner i-cord straps from the thinner yarn... Hmm. At any rate, I'm going to have to knit a sample to test both.