We don't actually use Bitcoin for this process because transfer wise is competitive in comparison. But if transfer wise didn't exist, we'd definitely do it that way.
Low level forex might have razor sharp margins, but consumer forex is a fixed rip-off industry.
Another reason I support bitcoin. Free markets should be driving prices down and exist in competitive markets. Consumer forex does not exist in a market with these conditions. Bitcoin is a good mechanism some startups could use to introduce more competition and introduce significantly more value for consumers.