I wouldn't be either, except that we live at the edge of a natural area of state park woodland, meadows and streams. I'm simply becoming more conscious of how quickly and easily non-native plants (especially vines and mustards) can take over in there as I walk the trails.
I wasn't certain either as to its fertility, and since I really had no other use for it other than trying to grow it, I let it go.
I don't mean to dampen your enthusiasm at all, and I hope you'll accept my apology if I did..I'm just trying to explain my thoughts.
Everyone's situation is different, and mine is only one of them.
The bottom line is, I bet it would look like a grapevine cutting.