I cook a lot, I strongly agree with avoiding things that only do one thing.
That slapchop looks real handy, don’t it? Wait till you gotta clean it. Any time savings are instantly lost, and now you have nooks and crannies for bacteria/detritus to hide in.
Look, generally speaking: if you don’t see professionals using something, there’s likely a good reason for it. Maybe you’re doing something smarter than a pro. But that’s rare, remember that.