I have updated to the Mac GoG hotfix for 1.0.6, and I can confirm that the Outworn Buckler is now stacking with effects from other sources, but that it no longer applies to any other party members.
Part of me wishes I had taken a more clear stand on this lol. I guess any change is a tradeoff. From a gameplay balance perspective, it seems good and not overpowered. From a design perspective, it seems like the designers were originally thinking the Herald effect would apply to the whole party, based on the description of the shield and, well, the word "herald." In making it a self-only buff, paladins lose a certain cool uniqueness and advantage of their class: that these shields just for them would help inspire the party. On the other hand, nerfing their unique shields makes a wider range of shields comparatively viable for them.
How do the designers feel about this outcome, if it's not how they intended it, and how do other players feel? I've got mixed feelings. Because it stacks, it is now a more obvious choice over a standard Fine large shield, when I have two tanks and it's one of the first two unique shields available. However, it also means I'll most likely be replacing it sooner, since it's no longer special.
Also, is the latest Steam version working the same way? Are the GoG and Steam versions the same build now?
Edit: Maybe a compromise could be to make it party-wide again (and stack), but lessen the effect slightly, like 4 to defenses for Outworn Buckler and 8 for Little Savior.
Edited by Nobear, 18 June 2015 - 04:22 PM.