I just wanted to pass along my thoughts on this product. I am not sure how new it is, but I ran across it in a local hobby store and since I have had a mixed bag of results with some of the others I thought I would try it out.
Straight out of the tube I found it to dry so fast (I am Arizona so the humidity is almost nothing). I found that it just was a dryish paste and wouldn't stick to much of anything when I was trying to trowel it in with toothpicks or a small spatula tool. I then mixed it with some distilled water until it was more like a runny toothpaste and what a difference. It went right into the seams. It dried in about 20 minutes and you could sand it and it just came off as a dust. It took multiple coats very well and some Mr. Surfacer over it and then some sanding and it was great.
For me, it will be my filler of choice. Water clean up and there was no odor.
John