My best advice on this one is to wait for the update. However if you want a workaround and your view is only going to filter based on the Inquiries then you can use a view that displays inquires but pull the data for the customer using the item attribute.
You can also do a nested view setup where your customer view is a child view of Inquiries but in reality your filters will be filtering the Inquires view, however since the Customer's view is dependent on what is being displayed by the Inquires view, then the customer's view will filter as well.