MezzI asked the Peak Design twitter folks if the leash was a good choice for DX / FX traditional DSLRs and they said that the leash is really best for mirrorless, so leash or SlideLITE is probably what you're looking for!
MezzI use a Slide Lite on my X-T2 and actually just bought the Leash last night. I really like the Slide Lite, but I picked up the leash for when I'm using a smaller lens or when I'm packing it into a little bag. The Slide is a tiny bit hard to fold up and takes up more room than I'd like sometimes, so I'm grabbing this as my alternative.