Sentinel + rampart + shield oath additive or multiple effects?

[reality_check]

1,000 damage attack with shield oath, sentinel and rampart up will result in...

1000 x (0.3) = 300

Or, 1000 x (0.8 shield oath) x (0.7 sentinel) x (0.8 rampart) = 448


Which one will result? Thanks.

[Alphras]

Multiplicative.

[Omskahn]

I actually never considered def CDs effects with shield oath.

You'd think that shield oath would be a exception to the multiplicative rule. Why should your skills that help you tank lose effective when you are all but required to have your tank stance on in most situations?

A little unintuitive

[rawker]

448. PLD mitigation is multiplicative

[GeekMatt]

^ tried and tested with those exact 3 skills ('cuz easy math).