Not to speak for Pers, but to me I'm not sure a partnership makes sense. Marsblade is targeting the folks who want the absolute best transfer from ice to roller. It is a premium product with few competitors. People will pay the premium for the product if they want the experience. And if you look at the price comparison to a high end static chassis and wheels, the pricing is very competitive, so it isn't even that much of a premium.
I'd also imagine most of the target audience have zeroed in on their boot fit needs. I think that is the biggest place where a potential partnership would fall down. There simply isn't the variety of fit options in the roller segment (particularly with 1 company) as there are in the ice segment. I'm seeing this right now, and granted I am relatively new to both ice and roller, but as nice as my new Alkalis are, they aren't my Grafs. I'm in the process of seeing if I can get them as close as possible, with a bit of massage and "wait and see", but that is different from saying "I know this boot works for me, let's put some wheels on it that will mimic a rockered blade".
Just my $0.02