Let the handwringing commence. Traveling next week for a 3-crit weekend and I can only bring one set of wheels. It's too far out for the forecast to be reliable of course, but the extended forecast is currently for rain all weekend.
If not raining I'd absolutely bring 60mm carbon tubulars. If the forecast holds, I'm not sure what to bring. My training wheels are your standard velocity A23 24/28 on decent hubs, neither light nor aero (not heavy wheels, but not light). I've never actually ridden the carbon tubulars in the rain but I assume braking would be horrible to nonexistent.