When I bought my Style from Reliable Gun in Vancouver in 2002, the salesman said the Style is exactly the same as the blued Silhouette except that the Style is finished in electroless Nickel.
Both have synthetic stocks.
The bolts on my Style and Varmint look the same and both models have two lugs. I remember their trigger assemblies look the same too.
I measured the scope mounting grooves without removing the scopes, so I couldn't really get a good feel of the caliper jaws on the groove, but the scope base on the Varmint feels a tad wider than the Style. Visually the grooves look the same.
The obvious differences between the Style and Varmint are the barrels and stocks, other than than they look the same.