Hockenjos does give pause for thought but as far as I can remember the DWP do not think it applies to HB.
So I suppose that until the cases listed as going to comms in the HB arena are heard and therefore a , hopefully, definitive decision for HB is made we are stuck with what the regs state, the current caselaw, what the guidance is on the current caselaw and how individuals interepret that information.
The first link below is to a HBinfo thread on Hockenjos and the second link is to a welfare rights bulletin.
http://hbinfo.org/forum/viewtopic.php?t=13309&highlight=hockenjos
http://www.cpag.org.uk/cro/wrb/wrb194/after_stec.htm