RTWP does not work for me because it is neither one thing nor the other.
I either want to play tactically or not, but not a bit of both. If I am playing tactically then I want to control everything, which means I will be pausing a lot, which means the real-time element is kind of pointless.
A lot depends on the style of the game. In Baldur's Gate / IWD I did not mind the RTWP because you could see everything on the screen. It still gets annoying from time to time, such as in dungeons with traps because the RT aspect means that you know some AI controlled character is going to pathfind through a trap. That does not happen in true TB because you even control where they walk.
In 1st/3rd person games like Kotor, RTWP is basically a pain in the ass. As soon as one of your characters moves out of your eye range, you just know they are going to do something dumb and you would pause it, except you cannot see them. Knowing where your people are in relation to each other can be a pain, as can targeting a particular enemy. Luckily, Kotor was are so tactics-lite that you can pretty much play RT almost all the time. And for NWN I just had my own character and no-one else to worry about: I could not stomach using companions because of the aforementioned control issues.
Part of it is playstyle too. In a TB game, nothing happens until you click "move". This allows you to relax more, since you know everyone is going to do what you said and then you get to assess the situation all over. In RTWP you have to constantly watch everything with your finger on the pause. Sometimes, not being ready to pause can mean death, so you cannot let your attention waver.