Clemens' write up on Cease was good.
The good:
High velo and Ks
Durable
Fastball is great and Slider is elite
Could squeeze more juice out of him by adding another pitch
The bad:
If he doesn't add another pitch he runs the risk of losing velo as he ages and then getting knocked around
As for my own analysis (let's face it, that's why you visit the site), it always seemed like slider-heavy pitchers were more prone to TJS. Also, I've always had a hunch that two-pitch guys tend to underperform their peripherals (see: Chris Archer), though I’m not sure how true that is.
If the Jays think they can effectively add to his pitch mix, and you know they are watching video to see if he could add a splitter, then I'd be all for signing him. But if not it's a pass.