We were worried about this since there were CDG blockades a couple days a week or so ago --We are old and cannot manage our luggage on metro stairs so I scoped out plan b and c for our trip today. B. was that if there was a blockade I would have our G7 deliver us to the Denfert Rochereou RER station which has elevator access from street to RER B platform. If things were really bad i.e. no cabs, then plan C was we would walk the km or so to the metro station at Maison Blanche and get the 14 to Chatelet and transfer to the B there. 14 is fully accessible and has elevator access from street to platform.
As usual, the G7 showed up about 5 minutes early and the trip to the airport this morning took about 40 minutes (we are in the 13th just below the Butte aux Cailles -- so one of the longer CDG cab trips.
Coming in from the airport is less worrisome -- so it takes a little longer. But missing a plane would be a real bummer.
There doesn't seem to be an airport issue at the moment. If there is when you come in, take the RER B and map out your plan ahead of time to minimize metros as you can't avoid stairs on the metro. I literally saw no evidence of the strike at all this morning and the dispatcher had assured me that there wasn't a current problem. We did see a hundred or so cabs blocking near Rue du Bac the other day while cabbies BBQed on the roadside.