Yep. Haven't got up to the line and extrude method yet, but have already collected a very nice set of profiles in line form. Boolean seemed the easiest way to get a true 45 degree cut in a modified box (although I could have angled the face to 45 degrees before profiling, but if I wanted angles to go in all directions I started with a straight section then cut them at the required angles). I also used boolean to create a joined geometry, but after the first experience with it in Poser, I went back and altered some of the faces. Works much better now (no long triangles!).

Having said that, I'm most probably going with the extrude line option. I have also now learned how to turn the straight section through 90 degrees with no 'caps' (so doing what line and extrude does). For curved sections of walls, the line and extrude option is probably the only practical way.