About the worst thing I can say about it is that it will probably freak a few people out, unless a lot of these amps start finding their way into circulation... not that many people expect to hear a suited character speak clear as a bell.
While hiking this morning, I told a techie buddy about it and he says it would be economically feasible if at least a dozen people wanted to buy it for their fursuit masks, but he says my estimate of the size of the amp and speaker were way too big---he says they each need be no larger than a quarter! (He has never heard of furries before and was quite amused by a few vids he watched of them.)
Of course if your fursona is the opposite sex from your real self or if your voice sounds pretty raspy, you may have a bit of a problem...