I did a quick search and found that a number of people are asking the same questions. It looks like no. Apparently, Proslat uses a different angle which forces you to use their hooks.
I have no experience with Proslat but I've ben working with and designing slat wall hangers for our showroom specific items for years. This sounds like the old Razor/razorblade marketing tactic. Sell them the razor for $1, charge them $20 for the blades.