Not a physicist, but I'll try my best here.
To answer your most basic question, does the breathability of a material change the rate of condensation, the answer is yes and no.
If you look at something called a phase diagram, you'll notice that the state of a particular matter (in this case water) depend on two things: pressure and temperature. As pressure rises, given a constant volume, the matter turns from gas to liquid to solid (think of propane in a tank). Similarly, an increase in temperature causes a matter to go through the same states (ice cube on a hot surface eventually evaporates). Condensation happens when a mixture of gas containing a certain percent gaseous water comes into contact with a cool surface. The surface causes a decrease in temperature at that interface, causing a change in matter state. In this sense, no, the permeability of a material does not change the condensation. The only way to change this would be changing either the temperature (such as defrosters on your car or by a double wall tent serving similar to a double wall thermos) or the pressure.
And that's where the answer turns into a bit of a yes. Pressure is a function of volume, but in this case, not of an enclosed area, but of concentration. Imagine if you will, you have 10 molecules of water vapor in two containers, one is 10mL, the other is 1000mL. While both are at atmospheric pressure (i.e. the typical sense of the word in mmHg), they are at different concentration pressures - i.e. there is 10 part million in the smaller jar and 0.01 parts in the larger. Despite the equal temperatures, the larger jar will form less condensation per given area, as there is less water vapor per area. Matter though favors a state of equilibrium (which is why things like smells eventually disperse into an entire room). Increasing the permeability of the container (in this case fabric) can either help or hurt you. If the exterior humidity (measure of water vapor in air) is greater than the interior, excess moisture will move inside, and condense on the interior wall. If the humidity inside is greater, than visa versa.
I would imagine if there was a hard summer rain, a breathable fabric may not help that much (though I have not tried this out for myself). In something like winter, where the air is typically rather dry, it should help more.