anyone used this rig before?

[Russiana007]

has anyone tried this rig? Is it built well? I have DSLR and want to shoot using my VF and shoulder mount. Don't like Loupe.

http://www.ebay.com/itm/BMPCC-shoul...37b1df2&pid=100033&rk=3&rkt=4&sd=331594790176