I like the idea of the cutter, but when I sewed QOV in my guy quilter group, all the kits were made with a cutting system and I didn’t like the accuracy of the cuts. I don’t know if the plates were worn out, the user tried to put too many pieces on one cut, or it was just inaccurate to begin with, but I never got used to the pieces and much preferred doing my own cutting.
I can definitely see where it would be a good option for someone with compromised hand strength or vision issues, but I’m not there yet.
The space is a whole other issue. You mention limited space, and if the cutter is not set up and ready to use, I would be unlikely to set up and take down every time I wanted to use it , unless I knew I could cut out a whole quilt in one go. Even then I would probably prefer my own cutting. It’s definitely a lot to think about. I’m sure there is a bit of emotion with it also since the cutter belonged to your mom. The correct answer may be “Later,” but you still have to store it in the meantime. I wish I were more help.