Accessing SharePoint 2010 BCS lists via SOAP/WebServices for use in a jQuery autocomplete

So it seems that you can’t access BCS list data via REST, according to this article. But it seems that you can access the list data through SOAP. I used the code below to query a BCS list that points to a MSCRM 2011 backend (I know I could go right to CRM via REST, but then I would have XSS issues). I then take the results and use them for a jQuery autocomplete for an input box. Obviously in the code below, Contacts is a BCS “external List”

$('#ContactSearchTextbox').autocomplete({
source: function( request, response ) {
	$().SPServices({
	operation: "GetListItems",
	async: false,
	listName: "Contacts",
	CAMLViewFields: "<ViewFields><FieldRef Name='FullName' /><FieldRef Name='ContactId' /><FieldRef Name='ParentCustomerIdName' /></ViewFields>",
	CAMLQuery: "<Query><Where><Contains><FieldRef Name='FullName' /><Value Type='Text'>"+request.term+"</Value></Contains></Where></Query>",
	completefunc: function (xData, Status) {
	$('#SearchResults').html(xData.responseText);
	response($.map( $(xData.responseXML).SPFilterNode("z:row"), function( item ) {
	return {
	label: $(item).attr('ows_FullName') + "(" + $(item).attr('ows_ParentCustomerIdName') +")",
	value: $(item).attr('ows_ContactId')
		}
	}));
	}
	});	    
},
minLength: 4
});