Hello,
I am delighted to inform you that as of Horizon View 5.2 with Feature Pack 2 - View now supports webcams when using Windows clients.
Please check out my blog post here that gives more information about this: http://blogs.vmware.com/euc/2013/07/3370.html
Previously we didn't support webcams because the bandwidth needed to run a webcam is huge and typically this does not scale over a real VDI environment. However the Real-Time Audio-Video functionality as described above works around this limitation.
Let me know how you get on!
cheers
peterB