I don't know about these, especially for over $20. With the amount of wasabi I add to my soy sauce, they'd clog up like my arteries after one of those 72 ounce steaks you can get in Amarillo.
How about you? Think I should sell 'em at Desert Island Foods™.com?
Doesn't seem like it'd be very well controlled. I can just picture picking something up, and on the way up, while pointed towards you, a little blast of soy pops out right onto the tie or white shirt.
I think the tube itself would resist inadvertently dispensing soy, but it's still crap. What's soy sauce on sushi without a blistering amount of wasabi, anyway? Might as well pick up a salt shaker.