I use this to with Octatrack as it says on the name.
However, here is some issues I found.
It comes with sock absorber which is glued. since i carry my OT with cover PL-2, I need to take off this absorber part. This makes PL-2 sticky with residue glue on the top side of cover.
And It looks bit tight fit(only on height) with OT and PL-2.
I need to carry my stuff around so I really don't like this unnecessary spaces which makes whole case more bigger. Bigger means less spaces in your backpack.....