[Puffster]

The only reason I can think of that this becomes an issue is if you disengage the handbrake (EPB) before you set off?
EPB is meant to automatically release when you start to apply drive/torque. If it's sticky through oxidisation the rotational forces soon cause it to release.
If you disengage a sticky EPB first then it may well stay a while as you're only asking it to "free" in one dimension (away from surface) and not two (away from surface and rotational perpendicular to surface).
Just my thoughts and a question. I live in a damp/misty part of Wales and this does happen sometimes but more of an issue with my RRS where it has separate shoes.