Just got off the phone with Music Direct and they had the pleasure of Andrew Jones demonstrating the Source Point 10 for their employees and that he was one of the most wonderful people they ever met. The rep I spoke with was in the same boat as I: he has Wharfedale Litton speakers stands (loves them as much as I do) and thought they could work but AJ said that despite the excellent off axis response, they'd still be too low at 17" in height.
Turns out that 20" is what Mofi is going with and AJ said that is fine for the speakers.
All the best,
Nonoise