Again, the rangefinder is not just for handheld photography, and is very useful for portraits with a tripod, because you can check focus with a filmholder loaded and ready to shoot.
With groundglass focusing it's focus, stop down lens, cock shutter, insert filmholder, remove darkslide, and shoot.
With the rangefinder you can still establish an initial composition on the groundglass, adjust the aperture, cock the shutter, insert filmholder, but then you can remove the darkslide, wait for the right expression, check focus with the rangefinder, frame with the viewfinder, and shoot, so you can be a bit more spontaneous.
If you're not using the rangefinder, then there are better options for a studio camera than a Technika. I find it very quick to work with a Sinar P, and the larger lensboards are a plus for classic portrait lenses.
With groundglass focusing it's focus, stop down lens, cock shutter, insert filmholder, remove darkslide, and shoot.
With the rangefinder you can still establish an initial composition on the groundglass, adjust the aperture, cock the shutter, insert filmholder, but then you can remove the darkslide, wait for the right expression, check focus with the rangefinder, frame with the viewfinder, and shoot, so you can be a bit more spontaneous.
If you're not using the rangefinder, then there are better options for a studio camera than a Technika. I find it very quick to work with a Sinar P, and the larger lensboards are a plus for classic portrait lenses.