Good prices, choices, materials! Thanks for introducing yourself, Vadim. I'll bookmark the website.
I have a similar sling, the (sadly lawsuit-handicapped) Luma Loop, bought from RFFer Rogier. Google Luma Labs for more info. Mine has a quick release for its tripod screw insert + a quick release for the strap. Also a very comfortable leather strap for your neck. I sling it over my shoulder, then put on a coat (now that I need one, i.e.), and the camera rides inside the open coat ready to go.
I also love the old Serenar tripod-screw wrist straps. I have 2. The screw-in rotates easily, and the strap leather appears indestructible after 50+ years. Best for cameras with the tripod screw at the end rather than in the middle.