Sounds useful for certain applications, such as gigging at a venue. 76 keys is sufficient for most songs/ pieces, and the weight is very good (less than 6 kilos) for transport. The sound is acceptable for public spaces, where listeners aren't noticing the "quality" of the samples.
I wouldn't use this instrument for practice or personal enjoyment (the sample sounds are thin, and the key touch leaves much to be desired), but if I was gigging somewhere, it would be very useful.