I thought this was a download link and got exited when I saw this.
Haha, I did the same thing. You're a bad bad man pxchoi!
My ebay soft release arrived yesterday for my X-Pro1, and it's definitely a great accessory.
20120421 - 001 X-Pro1 Soft Release by j_pang, on Flickr
So I've accessorised my X-Pro1 with a soft release and leather strap, and I think that will be good enough. The camera feels good enough in my hand that I don't think I'll be needing a thumbs up grip for it.