I bought one of these from PetSmart on a whim, shredded it and tossed the smaller piece into a number of my shrimp-laden planted vases/nano tanks to see how it responded.
For the most part, it just rolled around the tank or ended up wedged under a plant; the shrimp picked at it, but no more or less than they did any other moss. Eventually I decided to pull the stuff out and toss it.
The large masses came out in one piece, but some of the smallest shreds that came loose had attached themselves to sections of the substrate (fluorite mostly) and one piece of fairly flat granite that was set flush into the substrate had a thin coating of the stuff starting up (it's since grown into a fluffy mess the shrimp constantly bounce around on). A small spot of it rooted into some mopani, but after several months it's barely grown more than a mm along the wood.
Given the results, if I *wanted* to try and get it to grow on something, I'd probably do an emersed set up--tear up the moss into fine shreds, glue or otherwise fasten it down against the surface I want covered, keep it moist and under strong lights and wait.