Personally, I would be very hesitant on buying a silver trust fund that is a pink sheet. The .PK is very scary. The pink sheets service is a loosely regulated over-the-counter, decentralized market. There are few requirements to being listed on this network, as companies do not have to file with the SEC nor keep updated financial information.
i agree, i bought svrzf when pslv prem was ~25%. after the prem drop, i sold the svrzf and bought pslv. we could have a few more weeks of pps weakness in pslv, but long term, 6-12 m, this will be a big winner in my opinion.
What you say about pink sheets is true generally, but not in particular for SVRZF. It is traded in the Toronto Exchange as SBT.U, so it has to meet stringent requirements of the Canadian SEC. By the way, the Toronto Exchange is the world's largest for mining companies. But Silver Bullion Trust is much simpler - it just buys and stores the silver at the Royal Canadian Mint.