That would be one tough carpet to maintain. I had a bunch that outgrew itself and then slowly decayed. When it did that, it disintegrated into small pieces covering my substrate.
This stuff breaks apart easy and any agitation (especially a water change) really shoots it everywhere. I see it difficult to maintain as a carpet and even then, I have a hunch that you won't like it so much as a carpet.
I would go with something that roots itself and/or clings to the substrate for a decent carpet.