Jarrad was kind enough to provide a fantastic solution via an update to his CSS plug in.
See PlugBubble - Plugins, Updates & General Goodies
Simple implementation instructions example userAgent (draft):
GET THE ELEMENT:
Drop the CSSTools element from the Visual Element on the left of your editor onto your page
Assign any user unique ID in the Unique ID field
ADD A WORKFLOW:
On the page load add a work flow Element Action: Get Browser Info and select Your CSSTools Element name
USE LIKE THiS:
You can now refer to element as follows Your CSSTools Element name’s userAgent for example in a Workflow element: Only when: My CSSTools’s userAgent Contains ‘iPad’ then…