RE:SGSVG, SBB.TO or T.SBB?I'm not an expert but IMO, the only real disadvantage you have is the potential lack of liquidity of SGSVF vs. SBB, especially if you decide get out in a hurry. (OTOH, I suspect some mining stocks have so many U.S. investors that they are traded more on the OTC than the TSE.)
I'm in NZ and buy through Schwab, and have never had a problem with it. In fact, Schwab has usually given me a better price on SGSVF than the discount brokers would have on SBB (after, of course, accounting for the currency difference). Many Canadian mining stocks now on the NYSE started out trading only via the OTC in the U.S., and I'm sure Sabina will follow them, provided it is successful or isn't bought out in the interim. If you can trade SBB directly on the TSE, that is probably the best way to go. But otherwise, I wouldn't worry about the OTC unless you are trading penny stocks or companies that aren't listed on any recognized major exchange like the TSE.