Nah, it isn’t fully custom, it’s a pastiche of a couple of V4 and V5 poses. It’s very easy to make the towel do that, though. Just bend the handle to -90 degrees and set the same handle’s optional JCM to 100%.
We’ve talked about a pose pack being made and sold separately. It’s just too much to do for the main product (it’s already got quite a lot of content for us to manage and troubleshoot).
Once I have the towel, I would be willing to make a pose pack for it.