Just to let you know, i have double checked with the american main distributor of WON products (who knows a lot about the yank wank stuff and how it works obviously) and he has confirmed that it WILL be safe to use your holley controller with the WON solenoids just like we were thinking, although obviously its far from ideal as it wont allow you to set to the correct frequency for the won solenoids and doesnt have as many features etc.
But it shouldnt lead to any failures using it till you get a proper controller later on

If you do decide to step up to a maximiser later on (or need any other wizards of nos products) i can buy most stuff at 20% off for you as im elegable for dealer discount due to the volume of stuff ive bought from them over the years.