We are largely a VMware/NetApp/NFS shop. I have been experimenting with vVols lately in my test environment using the free virtual storage appliances from NetApp and EMC/Dell, both of which are hugely beneficial. After getting vVols to work properly with NetApp one time and never again (and without creating my own "cookbook"), I tried the EMC appliance and it was as easy as falling off a log. I do understand that EMC/Dell has a vested interest in having vVols working. They also have the ease of not having an additional appliance in the mix.
While I don't have years of experience in NetApp or vVols, my impressions of vVols on NetApp are not encouraging, and I could never make a recommendation for them in our environment as of now. My question to the forum is "Are they even worth pursuing at this time, or should we wait for a later version?"