I haven't seen many with the locking knob at the base of the main leg. Lee valley did offer one under the veritas name that has a locking lever at the pivot, but it's no longer available. That seemed like a nice alternative. You might find one floating around on eBay. Same for the woodpeckers version which was released two times, in two different sizes. I have one, but oddly I prefer the thumbscrew over the little barbel they used. That nitpick aside, it works great.
But if the locking thumbscrew at the base is what you're after, the blue spruce version is unlikely to disappoint. I would even gamble that it's made better but I might be splitting hairs. I have a vesper square which is nicely made and highly functional. I recently had a chance to pick up a few blue spruce items and they are stunningly beautiful (and of course functional). I'll be back for a few more selected items, and I would not hesitate to recommend. Unfortunately the bevel gauge was not among the tools I picked up, so I can't give you a first hand account.