Every time I've taken the personality inventory, depending on my mood I either test as an ENTJ or an ENTP. Each time, my preference for Judging over Perceiving, and vice versa, is small... like 1-5%. When I read the description of either, I have this "Aha! That's me!" moment. There are things that I really relate to about both, and neither one rings more true than the other, and for me the judgement/perception dichotomy is really not very meaningful and the boundary between them is more fluid.
There are things I relate to about both types. I debate for fun like an ENTP and have a perverse sense of humour, but I mostly don't try to intentionally make people feel uncomfortable (mostly...). But, I don't like to leave things to chance. I'm decisive like an ENTJ. But I'm not really very into business or networking, and while I always do have a plan, I'm not a pedantic planner. I mostly feel like I'm winging it, but competently winging it in a goal driven, ambitious, sometimes steam roller, type of way. Maybe I have the best of both worlds? The ability to plan ahead and keep my eye on the prize while being able to change course, adapt, and improvise when the situation calls for it?
Dunno. Not asking anyone to solve it for me, but maybe there are some other ENTP/ENTJ border land dwellers who have some insight into what I'm talking about?