Just as an FYI - Maximus does NOT have dimethicone in it.
It has parabens in it, but NO dimethicone. It is a 100% water-based lubricant.
Ingredients are (off my bottle):
Highly Purified Water, Propylene Glycol, Cellulose Polymer Disodium EDTA Phenoxyethanol, Methyl Paraben, Butyl Paraben, Ethyl Paraben, Propyl Paraben
Sliquid Silk only has a very small amount of dimethicone in it, so I'd recommend doing a spot test on your silicone toys (in an inconspicuous area) and if there's no reaction you should be just fine!