I have a pair (exact same color BTW).
What I like:
- very comfortable
- good for walking
What I do not:
- not rain proof (riding more than 30 seconds with light rain and your feet will be wet)
- sole is not aggressive enough for mud or slippery surface
- I had to change the plastic part which attaches to buckles twice
- The plastic part which covers the boot started to separate.
IMO, it is OK for occasional riding, but not for a long trip like you plan.
I went with Sidi Rain discovery and they are much better all-rounders (water-proof, still comfy - but not as comfy as the 50/50 - good for walking for a few hours, much more protective, higher quality...).
If you still prefer a low profile boot, I have seen one which looks like the 50/50 but is supposed to be water-proof. Can't remember the brand (Maybe AlpineStar...). I think it is worth a look at it.
Fred, Airhead Lover
BMW R90S 74 & R100GS 93, Ural Patrol 06