Does the Signature Tester show user information as it should appear in an email?

Query? 

You are using Exclaimer Cloud, and you notice that when designing signatures in the Signature Designer, the preview is displayed for a test user (example: Karen Green) unless the example user is changed using the drop-down.

Answer

When you use the Signature Tester, the matched signatures are populated with data for the user you have chosen to run the test with.