I got a Hexacon with 50mm 2.8 Tessar in New York City in 1955. I recall two useful features. 1) Lens could be reversed and held against the lens mount with no light leaks to get very close up; 2) Angled shutter release very smooth so could flop mirror up first and then release shutter, thereby allowing for very slow handheld speeds.
<p>If you are not going to be frequently changing from one focal length to another, and many or most of your shots will be at infinity (perhaps with the 80mm), then go for it. I found my 80mm to be tack sharp!</p>