Yup, the "don't run me over" is good cause it's non-aggressive and reminds inattentive drivers that we feel vulnerable out there. I'd wear it. The "share the damn road" ones are funny, but are meant for other cyclists. The drivers who need to hear it are the ones who would get angry reading it, the ones who don't need to hear it would just find it rude.
Winter riding is much less about badassery and much more about bundle-uppery. - malkin
1995 Kona Cinder Cone commuterFrankenbike/Selle Italia SLR Lady Gel Flow
2008 white Nakamura Summit Custom mtb/Terry Falcon X
2000 Schwinn Fastback Comp road bike/Specialized Jett