I have a Tan Darien light, a standard Gray Darien and a 1pc RC black w/hi-viz ballistics... for now.
The light is excellent in hot, humid weather with the vents open although I would avoid the black just because it attracts the heat. I chose the tan for this reason and simply wash it more often. It easily packs into one half of a the side bag or into my topcase with a fullface also.
The standard Darien is a slightly more bulky but still fits while the RC is packed on it's own but oh so worth it when on a trip or cooler weather and dressed in a suit work... easy on and off...
All 3 items are by far the best I've used and over 20 yrs. that's a fair number of items. I bought the Darien light this year to see how I liked it n comparison to the standard jacket. Now I also have the RC and will likley keep the light and the RC and sell off the standard Darien. I feel this will provide me with two excellent "all purpose" options.