I'm slowing learning from posts like these. I can see where you're going but how would I know they are compatible for the fruit tree scions I would want to grow, or do you mean find matching fruit trees growing? Unfortunately that will be hard, I rarely see them but maybe I haven't been paying close enough attention!
Wouldn't a nice parking lot find require a clone to ensure it's the same cold hardy variety? Then I wouldn't know if it's a dwarf variety, right? If I need to keep my eye out for other trees that could suitably host a scion then I can see how this requires significant tree knowledge!
I figured dwarf varieties may be safer for high winds and also fruit sooner in case it ultimately does die. If I have many I could simply replace them as they die. More importantly I have an amazing view on the side of a steep slope so I wouldn't want them to block it
