Shouldn't be too hard to make. I don't knit, but think that a cloak top with knitted wristlets on the ends would work nicely.
I have a long shawl with pockets in each end, they are marvelous for a tissues and a cell phone when worn over a warm nighty while reading in bed or on the couch with a warm lap robe. I think that all it needs now are those wristlets you mentioned. Thanks, I'd never have noticed their lack till now.