I redid my stovepipe back in '08 I think, then when I put in the new stove, I changed that to double wall telescoping. One of the goodest things I've done. Had it installed in about 30 seconds. VERY easy if you go straight up.
Mine did! The slip joints are not made very well. Actually, if you ask me ALL the single wall pipes connection are not made very well at all. But my slip joint was terrible, and worse after the first year it gets gunked up, and difficult to impossible (I could not move mine anymore) to move. For that reason, see my 3rd response below.... Isn't that the truth! OR, get a custom sized pipe made like I did. I had a local sheet metal/stove pipe maker make me a perfect stainless steel single wall pipe to fit in my oddball offset application between my top vent and an "alcove" ceiling box 38" up. Then I got one of the below style clamp on connectors which of course was figured into the design of the custom pipe (aka the pipe was made 4" shorter than required to accommodate this piece). No I have no leaks, and it's real easy to remove it to clean out.... http://www.efireplacestore.com/cpf-73698.html .
I should have said, slip joints don't leak smoke or creosote (unless its installed upside down). I'm sure a tiny bit of air is pulled into the chimney through them, probably less than what is pulled through a regular connection of single wall.