Hey,
at 90 cap, bladers get a skill named Shield PD (that was the name on konpaku guild

)
Its -when the skill is maxed out- that Atk. power will increase with 119 but the pyshical defense of the shield will low down with 74% BUT if we use that Shield PD skill combined with Ironwall maxed wich increase ur physicial def with 1210 so the 74% less defense wouldnt really mather...
My question is: can you combine these 2 skills with each other?