Champion which has a poke, an escape, and good durability, and ok speed?

I'll second Mundo. Cleaver poke can be pretty annoying, he's durable as heck, and his ultimate gives him good movement speed for chasing and escapes (which goes well combined with his cleaver's slow).

Aatrox isn't too bad using E to poke, Q to chase/escape, and sustain-tanking a lot of damage if he isn't bursted.

Elise (when built with Magic Pen and tank items) has good poke (hQ, hW), good mobility (sE), and is very durable with reliable damage.

Gragas with Rod of Ages and Iceborn Gauntlet is pretty tanky, Liandry's Torment can help his poke, and he's very mobile with some CDR.

Galio is passable, but I'm not sure how badly he was hurt by the Season 5 changes (Athene's Unholy Grail, etc).

Yorick is durable, has a movespeed boost, gets very tanky and has innate sustain, and can poke enemies (though the range is a bit short later in the game).

I'd throw gnar into this too. Gnar with both forms does cover most of what OP wants.

{quoted}

Let me give a bit of analysis here.

Two of the things you asked for (Poke and Durability) are very seldom on the same champion, for pretty obvious reasons. That, and you asked for basically every attribute except for cc. So here are the champs I came up with.

Lee: Best example of good mobility and durability mixed with escapes, but lacking somewhat in decent poke

Mundo: Excellent durability and good poke, pretty good speed and can generally escape okay, but lacking somewhat in mobility

Jayce: Excellent poke and good mobility, lacking somewhat in durability but more durable than the average ranged champ

Nidalee: Great poke and escape as well as sustain that turns out good durability, but squishier than the rest of the choices.

Hope this will help.

This guy got it about right.

Lee Sin has some solid durability with his shield and his sustain. His Q actually REALLY hurts if you go straight AD, but I wouldn't call it much in the way of poke since you don't really want to go for straight AD. It's more like set up for the rest of his "kill you" combo. He has a somewhat situational escape off his W if you have a ward handy, and you can juke to an oncoming minion wave with his Q if you feel like burning it.

Mundo I kinda disagree with. His poke comes entirely from Cleaver, which is actually super easy to dodge and isn't going to hurt a whole lot unless he's building heavy AP, not that I haven't seen that on occasion. Mundo may go where he pleases, but he isn't going to get there very fast.

Jayce is a good example, probably the second best poke on here. In addition you're encouraged to mix durability into his build, but your priority is usually offenses. He has a decent escape with his gate in cannon form, that MS boost is pretty significant, but not a whole lot of CC to speak of.

Nidalee's probably the best one listed here, and the one I'd recommend personally. The poke on her Q is simply enormous provided you know how to land it. Her mobility is insane considering the short cooldown on her Pounce. Taking her top lane and building her as a bruiser gives her a surprising amount of durability while keeping her damage still really high. Pounce also gives her a pretty okay escape, even if it's not the greatest thing in the world. She's pretty speedy too, especially when in a bush or chasing a Q marked target. On top of all that she has a nifty heal/AS buff.

Nid's probably got the most loaded kit out of these based on what you're looking for, mostly because she doesn't need to drop a ward or Q to a far off minion to have an escape option like Lee Sin, but he has just the most loaded kit in general usage hands down.

I found him squishy after I realized when my team were wiped out and I was escaping and I had no escape, I ran under turret and I was demolished by vayne and ashe. Keep in mind I built a great deal of tankiness. However I will probablly get nidalee then gnar afterwards.