@Adam *******
You're good then. We've done 8 multi month winter trips to Thailand and clocked over 20,000 km on scooters. I always get one of these, CA$25 from CAA, our auto club. On average, three stops at checkpoints where they look for helmets and permits. (Typically a fine of Baht 600 for the absence of either, paid on the spot and then you just drive on.) Almost always, the mere sight of that grey cover elicits a smile a wave or "Where are you from/going?" Only once, did he actually open the folder to look at my passport pic inside the back page. What became clear over time is that they really don't want to read it. Thais everywhere have a commendable command of basic English but reading, not so much. Add in the fact that their Year is about 500 years different than ours and that the motorcycle endorsement stamp isn't that easily understood anyway and they're just not going to waste their time. I resisted just keeping the 1 year permit for 8 years, which would work, since insurers might be more attentive than the cops if we got in real trouble. You're going to LOVE Thai touring.