Having the option to use this as a glove or a mitten is ideal. It is simple and easy to switch from one to the other as circumstances dictate. Very slim design also.
Ive worn these riding to class as well as on longer rides of 40 miles. The cover is perfect for the wind and the gloves keep my fingers warmish until the low 40s. For mist and light showers the water resistance is effective, just not water proof for sustained rain.