I wrote the review you linked to, so I thought I'd just join in the conversation with you. I think you'll be stoked with the 154. Not that you couldn't ride the 157...of course you could, and would probably rip on it. My critique of it was that I couldn't manipulate it to do what I wanted for jibbing/butters/etc. The 157 felt like way too much board for how I ride most of the time.
If you're riding a 155 SL right now, you will feel right at home on the 154 Proto CT.
just my .02