I've done it loads of times. Never had even a hint of a problem. The thing is to not try to hide it. Leave it out and you can show everybody how it works. Mostly they don't ask.
Tom hauled 70 of them to London this year, in checked baggage, and there was no problem we ever heard of.
Here I'll add a bit - in talking with several others who have traveled with Jones, I have never heard of anyone having a problem