For soloing, I wear my old DW dps set with a shield. I still solo in def stance for the revenge/dev-->S&B train, but with about 900 more AP, 10% more crit, and about the same block value as I had in prot gear. (more str, more BV).
I do *more* dps in def stance vs battle/zerker in every situation where I'm getting hit. When I'm getting hit, revenge+dev feeding the free Shield Slams pretty much keep me in rage, not to mention the free HS's from the Revenge glyph. The only time I need an offhand is DPSing as prot where I'm not taking damage. Soloing in def stance also lowers my downtime considerably.