[Boost-users] [signals] slot with no SlotFunction template parameter

I'm implementing a more feature-full slot class with some of the things that have been discussed recently. In particular, it is templated only on signature. It uses a templated constructor to store the slot function in a pimpl object that is templated by both signature and slot function type. So now I'm about to rip out the SlotFunction parameter everywhere from thread_safe_signals, as there no longer seems to be any need for it. I feel like I might be overlooking something though. Is there any reason to keep it? -- Frank