PvP Builds for the PC

Are you PC PvPers doing all your builds based on the Arena -- as in maxing the SL for whichever bracket you're shooting for -- and using those builds for invasions as well, or are you making separate invader/host builds?

Ooor are you maybe making invasion-based builds at whatever sl you decide and using them in the Arena without regard to the brackets?

I'm sticking with invasion based builds, as good as the arena seems to be, it just doesn't have that traditional DS feel to it, and that's what got me into the PvP perspective of DS in the first place.