I have it.
It's on the smaller side. I think it would be hard to pack with mainly because there's about an inch behind the balls where the harness attachment is and if you're packing in a harness it would make a big bulge. Even if you were packing without a harness, the balls being at a right angle to the cock would make a big bulge. I also have the spare parts harness but I found the whole thing didn't really stimulate me at all; I couldn't get it into proper position. Not that I ever used it with a partner or anything.
Some guys on another list seem to like it just fine.
Jay