It sure is a good logo.
I doubt there are many climbers today familiar with the early production climbing saddles offered to arborists in the 1960s and 70s.
One, called the Klein "NyBuck" Arborist climbing saddle" was a true instrument of pain. NyBuck (trademark by Klein Tools back in the day) was the material they used in the manufacture of lineman's adjustable lanyards. The process of manufacturing NyBuck is akin to making a multiple ply rubber tire, and just as stiff. Dimension wise NyBuck strap is about a quarter of an inch thick by 2.5 inches wide.
The saddle was a leg type. Consisting of 1 adjustable waist strap, 2 adjustable leg straps, and a fixed bridge. The waist strap and leg straps incorporated a large steel buckle that made the fit possible for a number of sizes. The buckles, btw, were the same used in the manufacture of Kline's lanyards.
All 4 components were sewn and riveted, (3 layers thick for waist strap, 4 layers thick for the bridge, 2 layers thick on the leg straps) to a Kline "circle D". Now the D rings (2) laid flat against the front of your hips. Similar to a halter harness. If you unbuckled the saddle it would lay out completely flat.
The Bridge did have a fixed D in the middle for tying into. However, the saddle lacked any functional D-rings for using a lanyard. You had to snap into the Ds, which were, of course, laying flat against your hips. If you can imagine the difficulty and the pain!
Side note: NyBuck strapping, when sewn and riveted in multiple layers, does not bend to conform to the soft flesh of one's waist or legs. Oh, not at all.
I did a search to try and find an image of the saddle to post here. Some images were close, but none of what I seen were the real McCoy.
However, I did find one image that closely matched the same style of construction. As a climbing belt it had more hard spots than a rocky road. And it was the reason so many arborists, back in the day, made they own belts. My own designs, if any of you recall, eliminated all the hard spots.
