From what I saw with the WHS
From what I saw with the WHS backup is that it uses a local drive and a VHD to backup the files. If I have some disaster that destroys that box I am hosed. Synctoy allows you to synch up across a network and there are no special needed to use the remote data.
I’m debating on working with a friend who has a WHS to see if he is interested in making backups between our two WHS so the data is offsite.
The drive pooling was a good idea in the beginning but over time I’ve seen the downfalls several times and when you have to shuffle terabytes of data around from a failing drive or something hoses the WHS GUI and you lose the ability to remove a drive from a pool you’ll wish you stuck with simple shares that can be pulled out and read in another system easily.