Hello
I always had heated grips on my previous bikes, but for my Scrambler, I've first tested heated gloves.
Heated gloves have the huge advantage to heat all the hand and they are more efficient than heated grips, but... if they are battery powered, they won't last very long and the battery will always be empty when you need the gloves. If they are connected to the bike, you need to put cable in your coat and it's quite long to connect/disconnect them each time you go on and off the bike. My gloves were battery powered.
I've finally installed Tecnoglobe Gold heated grips, because I find them simpler to use than heated gloves. They are always there, you just have to push on a button to use them. Even if they heat your hands a little bit less than gloves, you can ride in winter with them.