I'm also in the TB wagon, I prefer it over RTwP which basically what prevent me from finish the Infinity Engine games.
I would even accept some annoying DRM as long as Obsidian implements TB system, that's how much I prefer it.
But I also agree that there should be only one combat system on the game, I doubt Obsidian can implement both system successfully, so choose one (RTwP, apparently) and stay on that path.