as long as you stick to the udk grid size, and that trick from that link actually works properly to vertex paint multiple tiles at once then it should work fine.
Did another study today along with my entry for the spitpaint group. For the study i tried to lay down couple consideration at the end along with the perspective and the grid.
What are you looking to do with it? I add surface details using a plugin that allows for custom primitives and then use the auto grid feature to align them on the surface.
sigh, remember having problems like this myself. i'm not sure, but it might have something to do with the ordering of things. try attaching the circle grid to the surrounding shape.
We are in downtown San Diego (next to comicon). Looking for a full time UI Artist. This place rules, apply within. http://www.psyonix.com/games/#all/1/grid