Unless you live in a tropical climate I can't imagine not having either heated gear or heated grips the benefit is so great.
I have had both heated grips, and now, heated gear including heated gloves. Heated grips are more convenient, because they are always available, and there is nothing to plug in and no wires. They are also much cheaper. The downside to heated grips, vs heated gloves, is cold weather comfort. Heated gloves heat the back of the hand and insulate the rest so you get a very even, comfortable warmth compared to heated grips that only heat the palm, but not the back of the hand, the part that gets the cold wind blast. Heated gloves are more comfortable in really cold weather because of this. The downside to heated gloves is you need a long sleeve heated liner to plug them into.
My unsolicited advice - If you have a heated long sleeve liner or are going to get one, get heated gloves that plug in the cuffs and a dual channel temp controller, otherwise get heated grips. If it's cold enough for a heated liner you'll need the additional heat on your hands.
IMO textile motorcycle pants with the right base layer, a heated jacket liner worn under a 4 season jacket, and heated gloves is the cat's ass in cold weather. You can ride in 34F for hours at highway speeds like it was 72F and sunny. If you don't ride on the highway below 50F/10C though, it is probably not worth it though, and heated grips might be a cheaper option. Heated gear will add a month or two to your riding season.
Last edited by twowheels; 02-09-2016 at 08:07 PM.