Okay, let's clear something up here. In essence of detailing, a single stage paint will act the same as a base coat clear coat paint. Modern single stage paints don't absorb oils or anything of that sort. Clear coat is actually automotive paint without pigment and is translucent. What I'm getting at here is that is you use a glaze on a SS paint, it will act the same as it will on a base/clear paint. It will fill defects and blemishes without actually fixing them. It also offers no real protection. It sits on the top of the paint and makes it look pretty until the firrst time it rains or until you wash your car. After that, you need to reapply a new coat of glaze.
Think of single stage paint in the same manner as you think of a base coat/clear coat paint. The real difference between the two is the depth of color in a SS paint is quite a bit more vibrant than a base/clear paint due to the fact you don't have a clearcoat layer of paint dulling the color since you're actually seeing the color through a very lightly pigmented clearcoat layer. Clear is only virtually clear. There is usually a slight tint and distortion of color will occur where with a SS paint, you're seeing the color at the top most layer. A single stage paint is harder than the color coat of a base/clear paint so a clearcoat is required to protect the color. You can chip the color coat of a base/clear paintjob with your fingernail if there is no clear on it.
Okay, so long story slightly longer, SS paint doesn't suck product into it anymore than BC/CC will, but if you try to use a glaze on either, you achieve the exact same results and it will also act the same way when washed or rained on.
I hope that wasn't too out there. Lol