Pulleysaver is fabulous. Light, works fast, minimalist design. I love it. I immediately wanted a second, longer one for wraps and equalising but the $$$ were starting to add up. Picking up on the Treemagineers design, they lead me into some ideas that I called the U-SAVER (posted on YouTube, search "U-SAVER tree"). Check it out, might be useful.
Since the posting, I've gotten a couple of eMails basically asking if I thought the U-SAVER could replacee a PulleySAVER. I specifically say in the video "No, it can't be duplicated", certainly not by me, at least. These things are in two different leagues. It's like comparing a Ferarri and a pickup truck. The PulleySAVER is fast, great design and does a few things superbly well. The pickup truck U-SAVER is clutzy by comparision but it's cheap, flexible and can do more.
Let me be clear: even with "pride of authorship", if I could only carry one (1) into the tree, I'd pick the PulleySAVER over the U-SAVER in a heartbeat.
But, if you were building your climbing kit again, you couldn't just buy a PulleySAVER even if you loved it. You still need something you can set from the ground. Most likely, that's a handful of ring-and-ring savers or maybe some kind of crotch for your access line. To my thinking, the U-SAVER idea is a potential alternative to that assortment of ring-and-ring savers.
Here's my thinking:
Start with a normal, fixed length 2-ring friction saver then
make the big ring bigger;
put the small ring on a prusik;
add a retrieval snap at the end;
and have an option to easily add/remove a climb-rated pulley.
That's it. One adjustable replaces many fixed lengths, plus you get a variety of choking options.
Glad to be here guys. NEWBIE'S first post. Scary. Easier to be 80 feet up ... !