Jump rope is an awesome moderate-intense plyo workout; however I wouldn't recommend it to supplement an aerobic workout. I think it can benefit anyone from a short,fast sprint to a marathon. It helps recruit fast-twitch muscle fibers and teach or maintain firing of those motor neurons. It's also just a great way in general to work a lot of smaller muscles/tendons/ligaments and strengthen them (especially from the knees, down).
HOWEVER, the last thing you want to do is go get a jump-rope and then pound out a supplementary "cardio" workout. It's one thing to do 2-3 easy sets of something structured and build up in volume/intensity. But it's another thing to pound out a 45-60 minute session of jump rope. I learned this the heard way when I was stuck on a cruise ship for 12 days (it was more like a Russian vessel). It went to Antarctica and back. There were no treadmills or ellipticals and the ship wasn't big enough to run around on (besides the fact it was way too cold and windy). I decided to experiment with a jump-rope. But being an ignorant 20 year old who was pissed about not being able to train I decided to pump out 50 minutes. Long story short I woke up the next morning barely being able to walk because my calves were SO tight and cramped and I had broken down so many muscle fibers that weren't used to that movement or impact. I looked like an idiot hobbling around the islands - I pretty much wobbled like the penguins.