These are great segments. In some figured woods you can even get tear-out with a smoothing plane is some spots. Are the grooves from a toothing plane shallow enough that you could reasonably attack them with a card scraper?
yes, very easy with a card scraper. I said a smoother, because you generally can plane just about anything with a smoother and not get tear-out, if its set right. Its the planes before that point that create the most amount of tear-out.