A few things you will notice:
If you are not used to a rangefinder as I wasn't, looking through the view finder, everything always looks in focus. However the center focussing part of the viewfinder will soon tell you differently. This took me a few frames to get sorted out. When I was shooting in a hurry, I just grabbed it and shot and sure enough-- not in focus. Pretty stupid, but every other camera I've ever owned, when you look through the viewfinder and it is in focus, you can shoot.
I don't find it very fast to focus and shoot, again, not used to a rangefinder, it took a while.
When changing lenses, you have to trip a curtain to block the light from the film.
I also have a 65 and used I use it a lot. I also have a 150.
It is very slow to change film, for me anyways compared to a Hasseblad. I could reload film in a Hasselblad in about 10-15 seconds. This is a lot more tedious, due to the way you have to be careful not to let any slack in the film as you run it over to the other spool. Also attaching the leader onto the other spool is slow.
I would never take this over a Hasselblad but it is a great travel camera and carry around camera.
All in all it is still a great camera because of it's size compared to negative size. I still have only run about 20 rolls of film through mine so I'm still new at it.