It seems to me that DR/bubble gum works well in the beginning but towards the end of current mid level (eight or so) that mobs of any difficulty start realizing that you are indeed wearing bubble gum for dr and just plain hit harder.
I know that keeping it as low as it is keeps dr from becoming over-powerful, but it seems to me that right now the whole idea of taking feats and enhancements are more than a bit shy from a useful aspect of our characters.
Can we tweak this ability a bit?
How about making the feats themselves add +2 to dr? Currently the mobs are a little super charged so lets super charge some feats already no?
-paintedman