I haven’t done it yet because I’m waiting for shoulder straps to come in the mail. But I got the gray one to match my gray OP-1 case, which looks pretty good attached to the outside of the Unit 01. The bag is decently crafted, but I think it could use more details and reinforcement, so I plan on putting a raw denim patch on the bottom and maybe for trim on the handle. Was thinking of making denim accessory pouches to match too. I’ll post and update sometime next week. :o