  Recently Jang et al. reported the observation of half-height magnetization
steps in cantilever magnetometry measurements of mesoscopic annular Sr2RuO4
particles. Such magnetization features were interpreted as the presence of
half-quantum vortices. In an attempt to examine our findings, very recently Cai
et al. (1202.3146) have performed magnetotransport measurements of micron-size
rings fabricated from small Sr2RuO4 crystals. While fabrication of such samples
and subsequent verification of our findings is highly desirable, we would like
to point out that, at the current state of affairs, the direct comparison is
incomplete partly due to the fact that the measurements of Cai et al. were
lacking an important ingredient -- the in-plane magnetic field. We would also
like to offer clarification on few questionable statements made by the authors
of 1202.3146.
