Jayce Skills

So I found the skills here http://www.reddit.com/r/leagueoflegends/comments/vytt1/jayce_ability_details/. Thank you Mr. Redditor. Here is what the skills look like http://www.youtube.com/watch?v=TeupmwElZ14. Now its time to speculate :).
From what I have seen he seems to be a bruiser, another solo top. He starts the game with one point in his R. His R allows him to switch from his hammer to a ranged cannon. His R also gives him a little bit of a buff due to his passive. He gets movement speed and no unit collision. It also gives him a bit of damage. I will start with the hammer skills.
Hammer Q- He leaps to the enemies and deals damage and on top of that slows them. This can be used as a gap closer when trying to run in and get the kill or it can be used to harrass in the laning phase much like jax's leap strike.
Hammer W- its passive gives him some mana per auto attack in hammer stance. This is great for sustain which is great when laning. Its active creates a field around him that does some aoe damage. Again good to do some harrass.
Hammer E- His E does some physical damage plus some magic damage scaling off a % of the enemies max health. It also knocks them back and stuns them a bit. This seems to be his only cc. With some good positioning this can help you pull off some successful ganks.
I can see the combo already. Jayce can hit his W. Q on to his enemy. Get some auto attacks in and the E the enemy and run away like a little school girl. He could even R while running away to get away quicker.
Time for the Cannon form.
Cannon Q- Its basically a skill shot that deals damage. When it hits something it explodes and does some AoE. Can be used to harass or clear waves of minions.
Cannon W- This is a buff that increases your attack speed for 3 attacks. But it seems in the early levels of the skill you deal less than 100% of your total ad with these attacks. This looks like a skill that can used to get some harass in and kill some minions.
Cannon E- Makes a gate, its basically the opposite of Karthus' wall of pain, all allys that go through the gate gain some movement speed. And if you fire your cannon and it goes through the gate it deals extra damage. Can be used as harass or utility. Looks extremely use full though. It can be used to escape ganks or catch up with enemies. 
Overall I think he is going to be a great solo top. His only downside is his lack in CC. He does have a gap closer and some speed buffs but only one knockback/stun. He has only mana sustain he might be countered by other solo tops with sustain like Vlad.
Thats is all guys. Peace