Pros: Obviously, I don't have to take off my gloves to use my iPhone. They work well, I haven't had any problems with that aspect
Cons: Only one, the "touchpoint" on one of the thumbs was slightly turned on the glove where I had to keep pulling it over or I couldn't really use that thumb on my phone.

I do have kind of long fingers though, so if you have smaller hands this shouldn't be a problem. If you have longer fingers, constantly adjusting the thumb part can get irritating.