I wonder if anyone can help me. Are the pens for the Silhouette portrait the same kind if nibs as those of the cricut expressions. If I cut shapes out for children to draw, I draw the edges first to give the shape definition. When I have looked at the Silhouette pens they look more like biro's than the felt tipped pens of the cricut. If they have different pens to choose from could anyone please give me advice on which to buy. Thanks Jube.