I don't recall seeing a single TS185 anywhere on my trip Latin America trip. The only common 2 strokes I saw were the AX100 / other 100cc 2 strokes being used as city bikes.
Unless you are a diehard 2-stroke afficianado, they are definitely not a good choice for long distance touring. They've got their strong points (simplicity, low weight), but the increased fuel consumption, decreased engine longevity, and cost/necessity to source both fuel and 2 stroke oil on a daily basis make them bad choices for long distance travel. For touring or reliable commuting you would almost certainly be better off with one of the cheaper 125cc 4 stroke Japanese bikes that are everywhere in Mexico/CA/SA.
Not to say it can't be tried with enough determination:
http://dantpeters.com/going_down/
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