None personally, as I've never used Liquid Silk, but I've heard a few times around the forums that while it's normally okay with silicone toys (a friend of mine has never had any problems), it will occasionally react. Patch testing is a good idea, just like with a fully silicone lube.
For what it's worth, I have used Sliquid
Silk on my silicone toys without issue, and that also has dimethicone in it. Again, I patch tested ahead of time.