I know what you're talking about and I've not tried it yet. I've seen "crumbles" by Boca, Morning Star and someone else whom I can't remember the name of right now. I'll grab some on my next trip to the store and try them, I've been meaning to anyway.
I love Boca burgers... well, I love them on top of a bowl of rice or on a toasted bagel for something quick and painless to have for dinner. I'm not a fan of most other brands though I have had a couple of "mushroom" burgers that were good as well.
I do use TVP once in awhile, but only in certain dishes. To me it is best when used in something like soup or chili or some kind of dish with a very flavorful sauce. Which makes sense, since TVP has no real flavor of it's own. Whatever flavor it has comes from the way you cook it. I have also found that it's best to reconstitute it in broth rather than water. (And I use the term "broth" loosely here, since I only use veggie-based broths.)
Anywho, I'll let you know what I think of the "crumbles" as soon as I think of something to use them in after I buy them ...