You also have to take in-character decisions into account you know. Throughout the series run the one's he has consistently picked first are: Diamondhead, Heatblast, Fourarms, Humunguosaur, Rath, Shocksquatch, Swampfire, Feedback, and Gravattack, while his secondary picks are usually Cannonbolt, XLR8, Wildmutt, Big Chill, Spidermonkey, and Ball Weevil. With that being said, if ever he will pick Clockwork it will be most likely be after he picks at least 3-6 of these.
The only abilities Clockwork that don't make use of his time rays are his Time Slow and retrocognition, the rest of them all make use of his time rays. Also unlike Maltruant he has literally never made use of his time travel ability, so I'm pretty sure it would be out of character for him to use that here.