Basically just that. I have tool restrictions turned on, but restricted tools can still be used by anyone.
For the record, I'm using DarkRP and Falco's Prop Protection, but that shouldn't really interfere with how URestrict runs, right? Especially since everything else in it works, such as loadouts, prop restrictions etc.. the only thing that won't work is the tool restrictions. No LUA errors or anything, it simply won't work.