  It was recently shown that the $T_{90}-H_{32}$ distributions of gamma-ray
bursts from CGRO/BATSE and Fermi/GBM are well described by a mixture of only
two skewed components, making the presumed third, intermediate class
unnecesary. The Swift/BAT, Konus-Wind, RHESSI and Suzaku/WAM data sets are
found to be consistent with a two-class description as well.
