Ok this would only apply if were tanking... but imagine you could get two of these before you could get any of the really uber pop shields. Wouldn't the two +10% parry mods rock?
I'm currently using Heavey Windrider's Lance so switching to a nice 1-hander wouldn't cut down my dps horribly. Not like paladin DPS matter much anyway.
Any thoughts on being sensible to own two if say all pally/sks there had one or better?