After asking several people, I decided maybe I can find an answer here.

Does one get a bonus to their existing shield/targe if they cast SOL?

Or, does one only get the bonus to the shield if they are using SOL by itself?

Gabellia

If you're asking do you only get a bonus to the shield skill if you use sol with or without a shield, you do.


> tap tar
You tap an amber-scale targe with fitted seams that you are wearing.

You gesture.
A fiery blaze covers your shield arm like a vambrace of solid sunlight.

> exp mods
The following skills are currently under the influence of a modifier:

+ Shield Usage


As for if it affecting the shields stats in anyway, no.