And the +strength would stay even if you've taken...Blah, I'll make an example.

Say you're using Stormsheild, and you need the +35 Str from SS to wear the Unique Kraken Shell. (Kraken Shell has 40~50 +str)

If you take off SS, the Str from Kraken Shell would still stay, therefore you can still wear it without SS. But if you take off the armor, you can't wear it anymore unless you put SS back on.

Sort of like a bug they used to have in D1.