I read somewhere (on old posts here I think), that over time Armor All can actually dry out the dash and other interior plastics and make them more brittle and prone to cracking/warping. I think this was because of it having some alcohol content and that the alcohol strips away moisture.

I have heard that Son of a Gun was safe inside and for the cladding, and it is very easy and looks good. It is sort of hard to apply to the interior plastics in my experience (doesn't take to the plastic in there real easily for some reason in my experience). And you're right - if it doesn't stay dry for a little while after application, you'll have lots of streaks. And after any wash there are certain places the water tends to run down the cladding and I will have streaks to touch up in those places. So I would be open to trying Meguiar's for that. I couldn't find it the last time I looked, though.