My setup is similar to Henry's, above (55/4.5 Apo-Grandagon, 105/2.8 Xenotar, 180/5.6 Caltar II-N all cammed, plus various uncammed lenses I could use, if I wanted, with groundglass focusing). I got it when we had a child, because as travel got more complicated, I still wanted a camera that functioned like my 4x5" Technika V, but in a smaller package, and the Tech V 23b kit with the same number of lenses and accessories fits in about half the space as my 4x5" version, as well as being lighter in weight. I can shoot either with filmholders for individual development control or rollfilm backs when that is more suited to the subject.
Compared to other MF rangefinders or most TLRs, it's a heavy camera, but very versatile in that you can use it either press-camera style with the rangefinder or view-camera style with the groundglass and camera movements, and the grip is fairly ergonomic. The rollfilm backs are kind of bulky and add a fair amount to the weight compared to regular filmholders or Grafmatics. Of course a bag of filmholders is heavier and bulkier than a few pro-packs of rollfilm, but filmholders let you put the weight in your bag instead of having to support it with your wrist. I recently learned that my uncle, who was a professional photographer, once bought a 2x3" Technika to shoot weddings, and eventually he decided it was just too heavy for such long events (he must have been using a flash as well), and I think he ended up switching to a Rolleiflex.
The side-mounted rangefinder is separate from the viewfinder on the 23 IV and V models, so focusing and composing are separate operations just like on the 4x5" rangefinder Technikas. The viewfinder slides into the accessory shoe on top of the camera, and you can set the focal length and distance on it, as well as changing masks for different formats. It's not coupled to the rangefinder in any way.
As with most any rangefinder camera of any format, the close focus distance is around 3 feet for a normal lens with the rangefinder, maybe 2 feet with a wide lens, and around 4-5 feet with a long lens.