Anywho, I think I know which ENFP I was talking to you about. He was most definitely a 3w4 or 4w3-7-9 of some sort.
I've actually met and known a lot of ENFP's. I think the ENFP+ISFP combo jives really well as friends.
Back to these ENFP seemingly e5 types: They were likely 5w4 or 4w5 with a strong knowledge seeking, book wormy side. But still had that more emotionally sensitive, and elitist attitude. Both had 7 in their tritypes, too, and were experience oriented and party goers. But they were the ones that liked to sit on the porch and chain smoke cigarettes discussing the complexities of life, religion, politics and so forth. Many of their discussions were over my head. Sometimes I liked to sit and listen, but other times I felt as though they were making it a point to sound more superior, which I didn't find to be very nice. So I'd sneak away and find more light hearted conversation elsewhere.
Both had a very charismatic way about them. The one male in particular had a lot of females swooning for him. He wasn't very attractive either. He just had this aura that acted like a magnet. He was very confident, sensitive, intelligent, open sexually and funny. The other had more internal turmoil. He was charismatic as well, but would either attract or repel. Some people really detested him. Personally, I found him to be more often very thoughtful and kind. He wound up leaving our small town college for an ivey league school. I remember when he came back to visit, he said it was so nice to be around people where he could have intellectually stimulating conversation in multiple languages. I was put off a bit by the comment.
Maybe they're more 4w5 than 5w4?