Thanks for your interest. I have my XK-3 working great with the HX3, with all the controls from the XK working fine. I can even put the HX3 inside and don't need to have it on the top anymore. As I also have a B3 here I don't really need another Hammond!
So, I'll have to say no to a deal with your SK2, sorry, though it's a nice instrument.
What I really want are a smaller set of pedals to take out on gigs just sometimes. The big ones are great, and super quality, but I've never really needed them on the road even though I bought the case for them along with cases for the rest of my setup.
The pedals are still for sale if you decide you want them anyway.