We haven't done any internal testing on the Alpinestars Tech Heated Gloves, but know that Alpinestars gloves are quality made and have a great fit. Like any heated glove, these will work best with a heat controller that will allow you to regulate temperature. As compared to some of the Gerbings heated gloves, these have much better dexterity.
Another option several of our staff members have used is the Powerlet Heated Glove liner that has a very low profile and is easy to fit under your current winter or waterproof gloves. They also are recommended for use with a heat controller, but are less of an investment that any of the heated gloves on the market now.