It's a very different camera, and one you may be pleased with. It's a different style, and from a different era, so no auto anything, and you have to be careful of old shutters being much more inaccurate than you might expect an electrically controlled shutter like the Mamiya to be. It's certainly not the exact camera I would recommend as a starter medium format camera because there are lots of things to remember like cocking the shutter and advancing the film, but Ikoflexes are generally underrated compared to their more famous Rolleiflex-and-cord brothers and sisters. They are quite nice cameras in their own right. Very simple and elegant design in my opinion, and the viewing screen is brighter to boot! Triplet lenses (like your Novar) can be very good, it depends on the manufacture and condition, and to some extent random sample variation. I've taken some of my favorite pictures ever on Yashica triplets which were the same style as your Novar. But even if you get a great sample, you are unlikely to be blown away with high resolution figures or extreme sharpness as you might have been with your Mamiya SLR. But, you may still get a nice image, some cool, swirly background blur, and a great picture out of it! The most important thing is to test your camera, and see if you like it!