You knew that just as soon as I scheduled the previous post something significant was going to change. Well, the penny has dropped and SoV has been hit hard in the latest build.
Previously, both the Holy Vengeance DoT and 33% direct damage proc would trigger from Crusader Strike, Divine Storm and Judgement. Now, none of these abilities interact with SoV in any way. On the flip side, Hammer of Righteousness does seem to interact in a normal way.
This may be an attempt by Blizzard to equalise the DPS output of SoC and SoV, especially in PvP. It may also be an indication that they want to make stacking SoV's DoT a tougher proposition, and hence slow down the pace of SoV-damage in PvP. In that case CS et al not procing the direct damage may be an unintended side-affect.
Hopefully we'll know more next week, fingers crossed that this is just a bug.