Nutrition wise, it looks pretty ok. I think it would depend on your personal situation.
http://www.theherbivorousbutcher.com/pages/nutritional-informationProtein seems to be about 12-17g per serving. Sodium is not bad considering they're replicating sausages and smoked meats - most are 200-400mg and the higher ones tend to be the flavored products. Doesn't look like they add potassium or phosphorus preservatives to most of their products - so any amount of those would come from the wheat and beans they use as their bulk.
I hope it goes well for them... it looks like a product that could take off in a lot of different circles.