ClearsoundYes, unfortunately the grey one has been sold out. However, I think the black is a great alternative choice. In my own opinion, Black and Grey are both very similar and I don't understand why the latter seems to be more preferred.
PoopstickerI joined and ordered the black, this is too good of a deal to miss out on. You are correct they are very similar and black is a great choice. The Worn & Wound video review does a really good job at talking up the grey color which may be why they sold out first.