I have a giffin grip and I use it often. As I love multiples, I find it to be a valuable tool for saving time. But it seems to me the time I save by using the giffin grip is off-set by the time it takes me to locate three arms of equal length!
Am I the only potter who laments that the giffin grip arms aren’t color coded? I thought about spray painting the arms but I expect the paint would eventually flake off (and I am too cheap to purchase four cans of spray paint for such a small job). So I opted to use some colored electrical tape that I had already. I was able to mark the sets of arms by color which helps me find the sets quickly.