Hi there Louis,I've certainly looked it over but my plan is still to upgrade to the XF 150-600 at some point. Just biding my time until there is another price promotion by Fuji.
apparently you're 'safe' with your H2s, but me with my XT5 not so according to this review: Fujinon XF 150-600mm f/5.6-8 R LM OIS WR - Review / Test | OpticalLimits
Hope you find your deal soon ...
All the best.