Usually by the time I am done with a bed size batik quilt top ... and the batting ... its tough to spend the money on the batik backing fabric. I use what ever I want. Only a few times have I sprung for the batik backing fabric. I have even done a flannel back on a batik ( pre-shrunk the flannel) .
The only difference is that batiks will not shrink ( if they are a true batik, they have been immersed in hot water). So if you have a concern about the backing .. not playing well with the top ...pre-shrink it. Some of the lower cost backing do have a bit more that usual shrinkage.