Just embed a second ForEachChild statement within the called expression of the first. The first calls each approval and the second calls the approvers in the list.
Thanks AlasdairRobertson. It wasn't terribly clear on where to embed the second statement, but I figured it out for anyone else needing this in the future:
$(ForEachChild("ServiceReq#", RecId, "FRS_Approval#.", "ForEachChild('FRS_Approval#', RecId, 'FRS_ApprovalVoteTracking#.', 'OwnerFullName') + '\r\n'", "CreatedDateTime ASC"))
hehe the fun is in figuring it out. Its a really powerful technique that I use in lots of situations with both ForEachChild and ChildFold.