I'm not certain resolene's wise here. A saddle's deliberately organic, living between hot sweaty horse and hot sweaty human, and a working saddle will pick up water. This is why it's racked, to air, afterwards.
If your dressings are organic, they'll go with it. But acrylic resolene? No. The deeper layers may cause it to lose its keying.
It's all about adhesion. If you put a blob of acrylic on a glazed surface, you give a fairish lip to lever on and it'll peel away eventually, because it's only gripping by a very few factors, mostly vacuum. Applying it to something lightly sanded, scuffed up, and it's got mechanical grip too. However, if it's sprayed on in a number of light layers, there's no clear edge. The grip's not any better, though.