Do you use it on a D2?

What do you think of it?

I gather opinions are mixed, but it seems like a lot of the bad opinions are also from D3/LR3 owners, and I know the systems are newer...

Is the manual for the MSV available as a PDF, so I can read it ahead of making a purchase?

(And for bonus points: since their brochure says that the thing effectively speaks HTML, can I easily talk to it from Linux, without having to run Windows emulation?)