BBB is more about the play style not whether u're full dex or dual spec. Full dex gives u more weapon damage, dual spec gives u ability to use str equips and higher health pool. Atm I'm exping my bird to 56 so he's using my custom set so I respected my BBB to dual spec and I do the tanking when no good bears are around. (It happens more than often, I had a party of 4 bears+my bird and I had to take the point cuz they were too scared/reluctant to do it... yes it is very sad... Got booted when I suggested a bowbear to start using slashes and crushing boss).

Anyway See ya in sewers xD