Unfortunately I have encountered those "sales" people quite a few time during my long career (in financial industry.) They sell themselves very well, they're ve

Unfortunately I have encountered those "sales" people quite a few time during my long career (in financial industry.) They sell themselves very well, they're very good at with people, they make a lot of jokes, laugh a lot, they use their own families (dinner parties etc.) for getting closer to people and, dresses very very well for all occasions. They play politics in the office very well as well. When it comes to deliver something, you always see delays, they quickly offload responsibility to those who can actually do it (and they are very good with them as well). They suck up, but when it comes down to it, they kick down hard especially those who helped them in the past. They all disliked me, since I was very blunt to them. It is easy to detect them, since if he is really someone to deliver he will do it very soon, otherwise they play endless delay tactics.