BIG-IP VE Software Image for vCloud

It should not make a difference. vCloud director orchestrates vcenter, but I was not able to find any significant differences between the two images in our documentation. I'm sure that there are things in the vcloud image that help it to work with vcloud, but given what vcloud does it does not surprise me that you could run an ESXi image without issue.

I wish I could be more concrete, but hope that helps set your mind at ease.