You can add a text mode column to your view with the following code and it should get you what you need.
For actual assignments
valueexpression=CONCAT({workRequired}/60 ,' Hours - ',{assignedTo}.{name})
listdelimiter=<br>
listmethod=nested(assignments).lists
valueformat=HTML
name=Wrk Assignment(s)
width=300
textmode=true
type=iterate
usewidths=true
For Roles
listdelimiter=<br>
listmethod=nested(assignments).lists
name=Wrk Assignment(s)
textmode=true
type=iterate
usewidths=true
valueexpression=CONCAT({workRequired}/60 ,' Hours - ',{role})
valueformat=HTML
width=300