WanDISCO Subversion Multisite

I have a client that has a local US repository and developers all over
the world. The remote developers are complaining about slow access
times for Subversion. Some are even saying we should move to Git
(which really wouldn't help the commit times to the main repository
where builds are done).

I am looking into WanDISCO's Subversion Multisite as a solution. Has
anyone on this list have any experience with it? The costs are a bit
higher than I realized, so if I do a proposal, I have to be able to
convince the client it's worth the tens of thousands of dollars per
year they'll need to pay for support.

* What is your experience with Subversion Multisite?

* Is there another solution? What about svnsync? I'm technical enough
that I can do the installation and maintenance without a pretty front
end. However, I still need the multisync features.

Any information would be appreciated.

-- 
David Weintraub
qazwart_at_gmail.com