I have gerbin and they have their pluses but they are a pain to plug both sides everytime to get in and out of the bike, plus if you don't buy the controller which is close to 100 bucks, you have to buy the on and off switch and it will basically be really hot or off.
Also with a liner, you still have to get a pair or riding gloves that need to be bigger than your normal size so they fit on top of your liners.
With the Velocity gloves you don't have to plug yourself in and out and they are good quality riding gloves, I have the race version and after 3 crashes they are still in really good shape, they seems costly but it is one purchase and you get the heat and the protection all in one