I have the "bolero light" in sliver. Its a good weight for layering. Probably the other one would be better for those days that start out freezing, then warm to over 70 by mid-ride, worn over a short-sleeved or sleeveless jersey. I haven't seen it, so I'd be concerned about how small it rolls up and fits into your jersey pocket. The light one fits in easily.

Zen, if you end up hating your bolero, I'll buy it from you.