Rust-oleum Painter's Touch Multi-Purpose Latex Paint Review

Rust-Oleum usually makes excellent paint, so when I was looking at the hardware store for a half pint of gloss black paint to touch up a yard sign a work, I grabbed the can of Painter's Touch Multi-Purpose Latex Paint.  The can stated that this latex was indoor/outdoor long lasting paint on wood, metal and more.  The price was $2.00 less that the Valspar wood paint that I usually use.  I shoulda bought the Valspar.

The paint looked good when stiring, and applied well to the wooden sign.  Cleanup was simple (as it is with all latex paints).  I checked out the sign a couple weeks later and noticed paint flaking off the sign.  Thinking it was a new flake, I scraped, primed and reapplied the Rust-Oleum.  A few weeks later, same problem.  The stuff just is not sticking to the wood as promised on the can.

Needing to use up the paint, I have tried appling it to a metal lamppost without success as well.  I can not really recommend the product, but I can't dismiss it either, as it may just be the two surfaces that I am working with.  If you are looking for small cans of latex, stick with Valspar.