Since I have been a fan of Ona Bags it seemed natural to give their strap a try. The Ona Oslo Strap is a premium quality leather strap. It attaches to the camera with standard “O” rings and has leather tabs to protect the body from scratches. The tabs are nice but I wish makers would finish the back sides of the protection tabs. I have a Vi-Vante strap that finishes the front and back of the tabs and this gives a more finished look to the strap. After an extended period the unfinished tabs wear to the point that they give the strap an tattered look even though the strap can be relatively new. The strap is adjustable to from 40 - 46 inches so it is comfortable if you like to wear it crossbody like I wear them. It seems more secure that way.
I really like the retro vibe that the strap exudes. The Oslo is 2 layers of leather so it has a padded feel that is very nice. The leather strips that connect the attachment pieces to the main strap are secured with rivets and thread which adds to the stability of the strap. Some lesser quality straps use one or the other method and rarely both.
It seems like no matter the maker camera straps these days are of high quality. So it comes down to the attention to the details. The Oslo strap pays attention to the little things which makes it easier to justify the premium price. Ona frequently runs sales so you want to be patient and when the opportunity arises I would say treat yourself to a really nice strap.