Can't speak for anywhere outside of Northern CA but most the shops I've gone to bere in the last year label all smaller indos as Sumatran now. 1"ers go for almost $30 in most shops here because of it.I have yet to see any shops in this area label any of their dats as "Sumatran".
I'm skeptical because I know some stores and wholesalers are privy to the trends, that said I have 4 little, "Sumatrans" myself (would have bought them regardless of the label) and time will tell.