So I just got my new Wesspur catalog. Always interested to see what is new. I don't know how I did not hear about this. Has anyone tried one of these new wrenches? It sounds like you can mid-line attach easier.
I've read a lot about it and it looks and sounds great. I had been in the market for a rope wrench for a long time. The only thing I didn't like is that it only has 4 preset settings for bollard adjustment. I would much prefer more precise settings. This led me to the Notch Flow rope wrench, which is fully adjustable, the same way as a Rope Runner Pro. I got the Notch Fusion tether with it. Both items designed by the godfather of SRT/SRS, Kevin Bingham. The vendor this Amazon item is SHERRILLtree. The Flow rope wrench can be bought on it's own/separately at a number of retailers.
You make am interesting point. Except most people familar with the Singing Tree rope wrench are used to NO settings. I don't see how a Notch flow, which allows you to dial in that one setting PERFECTLY, isn't better or why you would need to change that setting in the tree. Kevin Bingham obviously saw a need for adjustability in his second (?) iteration. If you can climb with one setting, usually you can limb walk with it if the setting is open enough. Maybe if you are limb walking laterally from your TIP you may need to reduce friction, so you might be right in some instances.
EDIT: I just saw that you mentioned rain. That could definitely be a reason why you might want a quick adjustment.
Here is a review by Casey Snyder of the ISC Apex. I watched this before getting the Notch Flow and I still wasn't convinced...