I seem to recall someone using it last year and recommending against it.
Oh well, we all know results can vary depending on your climate so it'll be nice to hear a second opinion.
I'm def. against. The Matte isn't matte *enough* for me. My biggest problem is the SMELL. Maybe it's just me but my god is it terrible. I HAVE to do it outside, I can not use it inside at all. I don't mind other chemical smells but that spray makes me feel ill. If I use it at all, it's just because I can't stand to let the whole can just go to waste.
The Good thing I WILL give it; when I used it on a gift for my mother (painted wooden plant accessory) she kept it outside all the way into winter. It never faded nor did the sealer fail to protect it from the rain etc.