Invulnerability and Barbs

[Afyndax]

This is mostly 1-10 lvl stuff (before Invuln becomes less useful)

If I have invulnerability (5) on armor, the barb basic DR (2) and the Barb enhancement clicky DR9

How will that all stack out.

Will I be walking around all the time with DR 7, and then have DR 14 when the clicky is used?

[FrozenNova]

Nope.
You will have 5 DR/magic, 2 DR/-, and upon using boost, 9 DR/-.
For players, multiple DR types do not apply to one incoming attack.

[Afyndax]

so basically taking the 1DR enhancements is pretty useless before lvl 10 if you can craft easy invulner. The clicky is moderately useful.. At level 10 (when most things have magic weapons), redo enhancements and pick up the 1DR stuff maybe. Thanks

[unbongwah]

Virtually all forms of DR do not stack; only the highest applies. AFAIK, only two forms of DR stack:

• Warforged DR from Adamantine Body, Improved DR feats, WF DR enhs, and FvS LoB capstone all stack with one another. In theory, you could make a WF FvS with Addy Body + 6 Imp DR feats + DR III enh + LoB cap = DR 21. [You'd be nuts to do so, but it can be done!]
• Active aka blocking DR (i.e., holding down the block button) stacks with whatever is your highest applicable passive DR source.