I was slightly careful with my words ('appear to have issues' - just speaking from seeing the pics in this thread) and was not knocking your product - just saying that it might not seem like the thing for everyone!
question:
- the lower strap button is still attached by a flexible strap, while the horn button acts as a fulcrum. Aren't you still going to have a degree of motion, restricted by the length of the small belt strap?
also some might not like:
- the look (true of everything of course... but all comes back to choice!)
- it's attached to you - a pain if you swap instruments a lot
- it's not a DIY solution.
it's all good, i was also pointing out that alot of players can be critical without first hand experience to back it up.
as far as the fulcrum thing, it doesn't have a teeter totter effect even with a 2lb weight attached to the headstock,, so that's a non issue.
i personally wear the strap under a gig shirt ( or sportcoat ) at gigs & just leave it on during breaks, i use straploks on all my basses so it takes like 2sec to take off, or switch basses.
granted, it's not going to win any kind of fashion awards, ( as there's plenty of fashion straps to choose from ) that's not what it was designed for, but it is designed as one of the best tools that i've come across to help players that have issues with:
back issues
shoulder issues
neck issues
heavy basses
out of balance basses
neck dive
or any & all combinations of the above