I done knit up a pair fingerless mittens, a gift for my husband Tom:
(note: above model is not Tom. 'Tis me. He was sleeping during the photo session.)
I have a similar pair myself, and I like how they let me do a lot more than I can usually do with gloves on. And now that I have joined the ranks of the smartphoners, it's quite handy to be able to operate my phone while still keeping relatively warm.
The design is a meld of the mittens pattern in Ann Budd's The Knitter's Handy Book of Patterns, my fingerless mittens (store bought), and a little improvisation. They have some cables on the back of the hand, stockinette stitch under the fingers, and 2x2 ribbing around the wrist.
Plus they match the hat I made him before Christmas: