OMFG! I have two of those! Never realized they had that feature. Still glad I got the Stretcha.I have a String Stretcha. I found out after the fact that my string change tool (Planet Waves Pro String Winder) also had one built into the side. I still use the Stretcha as it's a little better ergonomically but the Waves one is nice if you are travelling light. I think it's discontinued now though and replaced with a model that is more like a pair of pliers with a winder on one arm.
View attachment 108743
I love mine, been using it for years. People scoff, but it works really well and is quick/effective.Just ordered me a String Stretcha that he uses on the set up video from their website. 14.99 plus shipping.